Driveshaft support bearings

[Radical Cam]

Well I am having problems keeping the driveshaft support bearings from breaking. I go through about two to three a summer. I just replaced one last weekend because all of the rubber around the bearing was shredded. I went for two drives since then and tonight the spotwelds on the metal plate that hold up the bearing broke. I am pretty sure that this was a defective driveshaft support because I just went over a set of railroad tracks and then it started banging underneath the truck.

I have a 350 in the truck with a turbo 350 tranny the motor is built up I would say around 325 to 350 horsepower or so. I am sure that this is part of the problem.

My question is that could it be that the driveshaft is out of balance? Or do a lot of you guys have the same problems with these driveshaft supports? Is there anything that I can do to prevent this problem or is going to just keep on happening?

Thank you for any help

Cameron