http://www.ebay.com/itm/COMP-Cams-Valve-Spring-Compressor-Steel-Shaft-Mount-Chrysler-383-440-B1-Ea-5324-/331586842522?hash=item4d341daf9a:g:2xsAAOSwMmBVhXLq&item=331586842522&vxp=mtr

Is this VS compressor usable for people not cycling steroids?
There is no lock mechanism.

Seems like it would make removing retainers a 2 person job.

I have to remove my inner springs for break in, 150lbs on the seat.