i need help finding out what this tool is called. what it does is stop the piston from moving. you take out he glow plug and you insert it through there and it helps you put on the fly wheel n pilot shaft with out the crankshaft moving. http://www2.towerhobbies.com/cgi-bin...?&I=LXPF86&P=7 this is the closest thing that i found to it. ofna calls it a pistion stop but isnt there another brand that makes one of these. trinity maybe