Quote Originally Posted by megamax42 View Post
It actually happened with the original starter as well, would always fire up cold extremely easy, then once it was hot it would be difficult. If I would go in the store for about 5-10 minutes then come back out it would start pretty easy, but once it's fully warmed up if I shut it off for a second then start it up again, I get the extremely sluggish turn over.
Too small primary battery cable, poor grounded neg cable, timing issues. Either one or a combination of the three. How far is the battery from the starter?