2006 CM870 vibration in floor 6th gear

[berrytrucking94]

Got the truck back Today:

-New clutch (I saw the old one and it was wearing very uneven.)
-flywheel resurfaced and housing gasket replaced
-input shaft and pilot bearing replaced
-rear main seal done

Tmrw it’ll be back pulling weight which will be the real test but bobtailing home ~30 miles felt like a whole new Truck. No vibration at all

Thanks guys for the advice and recommendations of things to look at