RonR,
I find the distributor clamp difficult to tighten, at least to my satisfaction. It takes a standard blade screwdriver tucked behind the distributor against the block. My COE started losing power and upon inspection the distributor had rotated and was not timed properly. Because most of my trucks reside at 6250 ft elevation, I use the vacuum method to time them, so it didn't take long to correct the situation. If I were you, I would rotate the distributor back to where you think it should be and see if it won't start and when it does use your timing light or vacuum gauge and fine tune it. Good luck,
Kent