Larsen Pettifogger did a great article in the Chronicle many years ago. I will search my files later this morning and post the 2 issues. I did everything in his article myself and the gun has been running flawless for 16 years. Only a few bucks for the lever spring kit.
I'll be back with more details!
The issues are November and December 2009
https://www.sassnet.com/resources/cowboy-chronicle
"A reversal of fortunes"
When you put the butt stock back on, only tighten to 5 ft. lbs.