If it something you find you can't do, I have had Mac1 work on three of mine.

http://www.mac1airgun.com/

This is another good site for repair information...

http://ujays.net/sheridan.html


This is a post I started several years ago on the Sheridans..

https://www.24hourcampfire.com/ubbth...hrono_results_from_some_5mms#Post5312328


...and a good one from RimfireCentral...

http://www.rimfirecentral.com/forums/showthread.php?t=497476


Good luck with your repair...Bob

If you can not deal with reality, reality will deal with you....