American Powertrain Hydramax Bearing Quesion

I purchased the complete A833 23 spline kit for my Duster. The specs call for 150 thos clearance between the face of the bearing and the clutch fingers. With the supplied floating stud spacer /retainer I am only able to achieve 050. There are not enough of the supplied shims provided in the kit to shim the bearing to the recommended spec if the mentioned spacer is not used. One option would be to mill down the aluminum spacer retainer. All I have is a bench grinder and there are no machine shops in my area. Customer service at American Powertrain is NON EXISTENT. I would say it Sucks but can’t even credit them with that since I was never able to speak with someone. I called 4 times today beginning at their opening time and was never able to speak with someone. My question is. Does anyone know where I might purchase more shims and a longer retainer stud? Hoping someone else here has ran into this problem. I don’t feel that I should have to pay out for more parts for an expensive inadequate kit. But at this point in the game. All I want to do is get the transmission mounted. Thanks