DLB1985

Okay, First off it's a 1986 2wd pickup. Carburated 22R, 4-speed. 135K miles. Really a premo original truck my Great uncle bought new. Never had any problems from it just routine maintenance. One day I was driving it, went into 2nd gear building speed and it died, wouldn't start back. Observed it had no spark so I put a coil on it, nothing. Put a new distributer in it, nothing. Bought a used ignitor, ran for about 20 minutes, cut it off and wouldn't start back. Had to replace the starter and selonoid after cranking on it so much. New ignitors cost too much so I put a MSD 6A box on it. Ran for about a week, wouldn't start back. New battery, plugs, wires, cap and rotor, nothing. Pulled the valve cover off, checked the timing marks and lifter adjustment, perfect. The truck will turn over all day without starting but I can roll it off and it starts right up. After the motor gets warm it'll start back all day, though it takes about 10 turns, and it still runs like a champ, but once it cools overnight or sitting at work, nothing. It won't blink the pickup light on the MSD but I can pull the distributer out and turn it and it has a heck of a spark. I learned not to hold the distributer in my hands with the coil wire hooked up after I numbed my arm up to my shoulder. I tried another distributer, put in a new ignition switch but nothing. I ran the ignition wire from the MSD straight to the battery, nothing. The factory ignition wire has 10.75 volts while turning the starter over which should be plenty to fire the box but it will not start cold without rolling it off. The main power and ground for the box are hooked to the battery as instructed. The truck's pretty light but this is getting old. Sorry this is so long but I don't know what else to check. Any advice would be greatly appreciated.