Adapt Your Saddle to Changing Horses

Gullet Changes and Shimming for Horses in Marlborough

When your horse gains muscle through consistent training or loses condition during seasonal transitions, the saddle that fit well in the spring may cause pressure points and uncomfortbale fit. Due to the changes that horses can go through it is more adventitious to have an adjustable saddle where the gullet can be changed, adding shims and the saddle can be maintained for a good fit for your horses body. Gullet changes and shimming offer a way to maintain proper saddle width and balance as your horse's body responds to workload, age, or recovery.

SaddleFit and Solutions evaluates whether a gullet change or shim placement will restore clearance over the withers and even weight distribution along the panels. This service works for horses in active training programs where muscle development happens quickly, or for those recovering from time off where top line rebuilding is underway. Gullet adjustments alter the angle and width at the front of the saddle tree, while shims add temporary support under specific panel areas to level the saddle when asymmetry is present and for the balance for the rider. Both are assessed carefully to confirm they address the actual fit issue rather than masking a deeper structural problem that requires a different solution.

Contact SaddleFit and Solutions in Marlborough to schedule an assessment and determine whether gullet or shim adjustments suit your horse's current condition.

What Changes During the Adjustment Process

The process begins with static placement of your saddle on your horse's back and checking the fit. In Marlborough, SaddleFit and Solutions uses hands-on palpation and visual assessment to determine whether shimming needs to be added to create a better fit for the horse and balance for the rider. The goal is to maintain a balance saddle, a supported rider, and comfort for the horse. The work is done on site with tools and materials brought to your barn.


After the adjustment, you will see the saddle sit level from pommel to cantle without tilting forward or back, and your horse will move with a freer stride. Gullet changes are most effective when the saddle tree design allows interchangeable gullet plates, and shimming can be adjusted overtime. 


Not all saddles are easily adjusted, those that are can be easily done on site. This service can be combined with flocking adjustments or billet replacement during the same visit, but it does not replace a full fitting evaluation when the saddle no longer matches the horse's current shape.

Questions That Come Up Before Booking

Riders often ask how to know whether their saddle needs a gullet change, shimming, or something else entirely, and whether the adjustment will hold up through a training season.

What does a gullet change actually fix?
A gullet change widens or narrows the front channel of the saddle to restore clearance over the withers and match the angle of your horse's shoulder. It addresses fit issues caused by muscle gain or loss in the front half of the saddle contact area.
How do I know if my horse needs shimming instead?

Shimming is used when the saddle tilts or sits unevenly due to temporary asymmetry, such as one shoulder weaker than the other or a dip in the back. 

Why is shimming considered a temporary solution?

Shimming compensates for muscle imbalance or conditioning gaps that may resolve with targeted exercise or bodywork. Another reason to shim is for the riders balance and position. 

When should I schedule a gullet or shim evaluation?
Schedule an evaluation when your horse shows resistance under saddle, develops white hairs or dry spots along the back, or after a significant change in work level or body condition. SaddleFit and Solutions assesses whether the adjustment will resolve the issue or whether another service is needed.
How long does the adjustment take during the visit?

Gullet changes and shim placement typically take thirty to forty-five minutes, including observation during movement and final adjustments. The visit may extend if combined with other saddle services. Plan on at least an hour for an adjustment. 

Horses in Marlborough transition through seasonal work cycles and conditioning programs that change their shape faster than saddles wear out, and this service bridges the gap between those changes and the equipment you already own. Reach out to SaddleFit and Solutions to book an assessment and confirm whether a gullet, shim adjustment or even a shim half pad could fit your current situation.