Starter issue?

[nail pounder]

This morning my daughter and I took our 58 grocery getter for coffee and a test drive. We got it good and hot, ran it around for an hour or so to see if any new problems would surface. All went well, but when we got home and shut it down then tried to start it back up it wouldn't crank over, nothing, no click, nada. I tried to jump the solenoid then the jumper box but still nothing. I figured starter got hot, it's old and I'd probably just need to replace it. I left it until this evening thinking it would start after cooling, still nothing, first tried a jumper box then decided to push start it. Fired right up, and now it seems to start every time(6-7times). Here's the statistics, 235, 3spd, new clutch/ring gear etc, batt with truck off is 12.5a, truck running still about 12.5- 12.7(generator or alternator conversation is on the to-do list). I'm still thinking starter but anyone else had this experience?