I have a Pietta '51 Colt repro. which has timing issues.I ordered a complete rebuild kit with springs,hammer,trigger,bolt,hand,etc.I've installed all the new parts but still have to push the hammer forward with my hand to reset the hammer/bolt or the cylinder will stay locked.I know I need to do some filing/fitting,but I don't know whether to do it on the bolt or hammer cam.I have two good hammers but only one bolt,my thoughts are to file the hammer cam on my old hammer.Also I've filed all the way through on the hammer to "fix" my high shooting colt until I'm looking at the frame and I'm still shooting nine to ten inches high at twenty paces.I know these guns are suposed to shoot between wind and water but is there a replacement tall front sight or should I learn to silver-soldier?