Noisy rebuilt starter

[Chuck Banks]

I experienced several no crank when hot episodes in my 93,000 mile, '92, and thanks to previous threads on this forum isolated the problem to the starter. I replaced the starter with a Remy rebuilt starter, but now have a momentary metallic screech or squeal as the starter engages. The starter then spins normally, and the engine fires right up. I didn't test the starter before I bolted everything back together. Is it possible that something in the solenoid had dried out and makes the noise or possibly a bearing in the starter was bad and not replaced by the rebuilder. I feel like I need to replace this starter even though the car has been starting OK for the past several weeks. Can I engage the starter if I bolt a new one in by sending 12 V to the post where the purple wire attaches and ground the starter motor? I don't want to use the key and pressurize the fuel system.
Thanks for an thoughts or advice on solving this problem.

Chuck