Probably a lesson in trying the easiest things first. Both my issues with my Tells were solved with lubrication without taking apart the guns. I put a lot of lubricant into the cocking mechanism in the rear of the gun and keep working it, the one gun now cocks and holds. The low powered one is now at 260 FPS, I’m assuming the oil has swelled some dry leather seals. Worry about the pins another day which is fine with me.