starting problem.. and it's not the main relay

what might be the problem. it has problems starting after a drive when the motor is still hot. i turn the key and the engine doesn't turn over. i wait a few minutes and try again and eventually it turns over and starts.

after a couple of hours off it starts fine. the main relay has been fixed and i hear it clicking. the engine just doesn't turn over. the wires are connected and not loose. what should i inspect? like the starter and what else?

starter silinoid (thats spelt way wrong I know).

If you dont know thats the part that the little wire connects to on the starter. I'm pretty sure its not replaceable on these starters, you might could get one from a junk yard and take it appart and get it but I dont know if you can just buy that piece sence its built into it. On older cars some were mounted on the fender/firewall (ford type) and others were mounted on the starter but were replaceable (chevy type).