A904 inspection cover fitment with mini-starter
Did you check the fit with the big Chrys starter? If it fits the problem is with the starter, if it doesn't the problem is with the shield.
EDIT: Many people think the "Remy is a "Delco-Remy" quality starter. It is not. It is a Chinese knock-off. I cannot comment on the quality. It might have a flaw in the casting.