I was doing some maintenence on the old stang today, the usual oil change, clean the MAF,plugs, etc and checked the timing and I had scribed a mark on the dampner a while back and noticed it was like 4 degrees retarded, its a Ford piece and been on the car for about 2 years and was wondering if its starting to spin/move due to age or something? I advanced it a few degrees and she idles better and got a little more pop to it, is this common for these Ford dampners? I was thinking of puting a piston stop in #1 plug whole and turning the engine over by hand in each direction and find true TDC to see how far of it might be