I was wondering if any one here has ever installed a J.P. Enterprises JPFC-1 adjustable trigger with their Speed Hammer. I ordered one from Brownells yesterday for the 264 lbc build I'm working on. The reviews I read are pretty good but some say it can be a pain to install and adjust with some file or stone work necessary and others say it was a piece of cake to install. If anyone has installed one do you have any advice or anything I might need to watch for or anything that would make the installation easier. It comes with a 30 minute DVD explaining how to do it.