Starter wont turn after warm up

[Lochlin]

I posted about this a couple of weeks ago and thought I had a bad starter. I put a new starter in and thought that took care of that but it didn't after all.

87 G1, here's the deal:

When the cart is cold the thing fires right up and runs like an animal. It will keep running well until the engine is warmed up at which time it keeps running. However, once the engine is warm and you stop the cart, like at a stop sign or something, it wont restart. The starter wont turn, no solenoid clicks, nothing. Now, given 15 mins or so of cool down it fires right back up and runs great until the process repeats. Of note, the cart does start again after a stop and the engine is still cool.

My initial thought was that heat was affecting the old starter hence the replacement. However, the same thing is happening with the new starter.

I did a pretty good wiring inspection this afternoon and nothing seems amiss. Even with that, logic kinda says that any wiring mishaps would cause the engine to not run when cold as well as warm.

This cant be cdi-related, can it? Seems like if the cdi was screwed up it wouldnt run when cold and the starter would spin no matter.

This has to be something related to the starter circuit, right? (starter, key switch, solenoids, aossociated wiring?) I am going to study the wiring diagram but, sheesh, the starter circuit is pretty straight forward. This is different for sure.