boyds varmint cheek rest

swapped out my tigershark to a boyds varmint thumbhole for my wife to shoot f class with it .i noticed she need about 3/8 of an inch more so she doesnt strain for perfect eye relief/site picture.
what is a good rest that can be added to achieve this with the right side cut like it is a kartsen wont work and lace up ones would grab in the rear reat any help ? pics?
thanks larry

The Savage FTR stock uses the Choate plastic pieces that screw onto the top of the stock. They have varying thicknesses. Would something like that work?

not sure i'll have to see where i can get them i have till the end of may before she uses it in a match.

found them at midway going to give it a try

Cool.