OK, so every so often my starter on my 92 RS 5.0 TBI makes the sound grinding that one hears when you turn the key to start an engine that is already started. I am not sure how old the starter is, but it seems to do it when the engine is warm and not when it is cold. It does not do it often and at most it does it twice and then it starts just fine, I am just wondering what the issue could be. Any suggestions?

 

Bendix going out or starter is misaligned