Custom driveshaft potential issues

[Layne3]

Following my apparent issues with 'axel tramp' I've come to realise that it's the driveshaft playing around

When getting my custom driveshaft I reused my rear half and hanger bearing and got the front half remade.

I went to replace the hanger bearing as a precaution however the parts shop gave me a front hanger bearing instead of a rear one.

The front one is solid mounted to the body where my one has a U holding it in place

Is it possible that my vibration when dumping it is caused from the hanger bearing type/location not being solid enough?