When the stock TR8 starter goes bad, most people opt for either the later stock Rover starter or one of the aftermarket starters. Both options are smaller, lighter and are considered gear reduction high torque starters. They work very well, and are almost essential if you opt for a larger displacement or higher compression replacement engine. They will turn over a warm high compression stroker motor with ease. Never heard of the problem you are encountering. I guess it's getting harder to find stock cores to rebuild. Maybe the fact that I have 5 or 6 of them isn't helping the situation. I suggest you return the one you have and look for one of the high torque starters.