At My Wits End!!

[sjarrett71]

I'm having a problem with my truck. Last weekend I swapped out the granny low 4 speed with a TH400. Everything went perfect with the swap but when I went to start the truck it seemed like the starter was dragging (yes it is spaced out correctly). At first I thought it was a dead battery so I charged it and it didn't help. Put a different battery in and it fired right up. Ran it a while and shut it off, when I tried to start it again, same thing. I thought it was heat soak because after a while it started fine again. I have tried to charge the battery, changed the timing, installed a remote solenoid, and nothing helps. I haven't tried a NEW starter yet or a NEW battery but I have cleaned ALL the connections and even installed new battery cables. All of the ground wires and connection points have been cleaned as well.

I'm asking for your guys' input before I start buying parts I may not need.