b4 diff balls

[keenbutkrap]

i seem to have sold my losi and kept a b 4 money pit needs a diff rebuild got a kit but it has no balls ooer associated parts seem expensive je ceramic are half the price hpi steel are £4 for enough to do 2 rebuilds dont want to throw money at this car want to build it and run it
its already cost more in two meetings than my 22 did in 18 months
what do you recommend as a fit and forget part