2 Way Diff Issue

[Jack-]

Hi guys, I've got a 2-way installed on my 34 gtt, and it clunks and thumps a lot around corners. it's now started to thump every now n then when going straight or turning slightly. it's obviously trying to keep both wheels going along together which makes it thump, although unsure what's causing it while going straight now. wondering if the back wheels need an alignment or a balance? the car also swerves sometimes by itself either left or right not sure if its got to do with the diff either.. anyone have any ideas?

[Frosty]

sounds like it might be starting to act up..possibly need a rebuild...

have you taken had it checked?