slant six starting problems

Is it possible the timing at the cam has slipped? That is, the chain? There is a procedure in the service manual to find out.

Download one here:

http://www.forabodiesonly.com/mopar/showthread.php?p=1970088617

There are ways to compensate for the distributor gear

You can move the plug wires one position or the other on the cap

There's a additional slot under the distributor just like the one you see on the block:

http://img.photobucket.com/albums/v484/slantsixgoon/turbinator/S6301940.jpg

Make sure the distributor drive gear is not damaged, as it is plastic