DRB GT-40 , Roush 427IR G50-03 Transaxle. Starter is new. Starts cold instantly ( super fast cranking) . After driving for fifteen or twenty minutes , shut down engine. When restarting right after shutdown , Starter will barely crank. Wait five minutes or so and it cranks like when cold starting . Starter feels warm (hot) so wrapped it with heat shield material. Same issue. Appreciate any thoughts or similar experiences?