I dont know about jerrys video but AIG's video is pretty good. Also, on both my PC guns they came from the factory with upgraded Wolf springs. The trr8 and the 327pc snub are defensive revolvers and smith listed the wolf springs as part of the PC package so i dont buy any argument that the full power mainspring causes failures.

I would order jerry's or AIG's video and a set of gunsmith stones (or if you have square ceramic knife sharpening stones already they will work) with the wolf kit (its cheaper on Wolf's site) and just do it all at once. After the first "trigger job" you will probably want to do all your revolvers. I did and every revolver I have is defensive with no problems.

FYI: If you arent mechanically inclined and haven't ever sharpened a knife by hand or filed anything, doing gunsmithing work on your revolvers might not be for you.