Friggin pinion nut not breaking loose....

I'm old. I don't think the op has a compressor.
you guy's must have grown up with a shop and all the tools needed to do things the easy way. lol
Even with a big *** compressor and hi torque impact at my disposal, sometimes I still don't screw around and grab the jack handle. I even work outside in the gravel sometimes just to relive my youth. :D

I wish Lol.... Nope, enough bar and weight will hold it down and make it move. If you really want power out of an airgun the compressor and airline is critical otherwise it doesn't help squat lol.... I use to setup R&P's for people and I got to where I would break the pinion nut before doing much else to get a mechanical advantage on it. I found removing rears and such was working against me. In his case he has a 3rd member but that can be even more challenging....

The car life. Gotta love it...

JW