HI Matt, all,
I took the SC10 out for a spin a few days ago and after 4 batteries (NiMH) I split the cup of one of the axles. I went to see my local hobby guy and he has ordered a new diff/g'box assy, out-drives and CVD's.
I'm going to do a full rebuild before putting new axles in as I'm sure the issue is not the axles but the diff and LHS thinks so too.
Just waiting for the bits to turn up. Then it's off to read the sticky about diffs and away we go.
I'll keep you informed.