Hey guys. I installed new condensers and points on my 750k6 the other week and just got around to checking the timing with a gun. The f2-3 mark lines up nicely but the f1-4 jumps all over the place when lined up. I re-gaped the points several times, strobing it afterwards with the same results. Valves are within spec, carbs rebuilt-synced and motor revs nicely. Any ideas why the F1-4 mark would jump back and forth? thanks.