XRAY - Model racing cars

I have an XB808e '10 and would like to change diff bearings, now it has two bearing if I add 1 bearing more and add the differential Collar is it would be better ?

Or am I change whole bulk head , 8*16*5 bearings and xt8 bevel drive gear 10T like the 2011 Spec

Thanks to any advise

Switching to the truggy diffs and pinions with the Kyosho drive shafts in the pre-'11 808's has proven to be a more reliable setup. I've got that setup and not only does it free up the drive train, it cuts down on maintenance.

Thanks , but I ve got a 808E 2010 Spec not the 2010 Nitro , I change the bearings from 20mm to 16mm in a 2010 Spec Bulkhead, with xt8 pinion gear , but I couldnt find the right drive shafts

Here are the pictures