What mini starter are you using ?

So you're saying you bought this and parts are used?
Starter For Mini Mopar Dodge Plymouth 318 360 Chrysler Cordoba 5.9L 128000-5270 615311352399 | eBay
That auction says NEW... I'd return it, and should be at their expense.
$44 is almost cheaper than pull a part + the time it takes to pull and the core charge and warranty they get.