Rebel-I went through the same type problems with my AH flinter.My vent is (was) to low ,tried every vent known to man.I have a white lighting vent in mine now and it is very fast.I also ground the pan and polished,this was when I was trying different vents.AH take the same vent as CVA/Traditions,I would not waste my time again,just go with the white lightning.As far as the frizzen,mine did the same thing,very sloppy fit.Mine kept breaking the frizzen springs(3),finally sent the lock to Steve Zihn(forum member).He made a frizzen spring and repaired the old frizzen(frizzen fits and work's correctly now).You can not switch locks from percussion to flint because(as a drop in ) of the lock plate size.They are a different.My AH prefers a .490 ball and .015 patch,fortunately they are good shooters.Mine has always been a good sparker,after Steve worked on the lock, very easy on flints.I tried parts from LR lock co.,nothing really comes close to fitting.I checked with Stan Hollenbaugh,said he could make new parts.Sorry for being so long winded,just trying to save you some time and maybe reduce your level of frustration.I hope this helps..Respectfully Montanadan