Ive not used it since i bought it off here for £80 quid so I cant say it dosent leak, but i do know it works as i hooked it up to a board to see if it clicked, it does fit regular cocker bodies, as both the karnivor and standard autocockers use the same valve, the differnece is in the spacer as the karnivor has the ics which means the standard spacer wouldnt fit but i have both, as to damage thiers zero damage, no wires pinched everything is in good order, I tell you what if you not sure if you buy it and it leaks thats not a simple fix i will refund you the money.