Outer Limits 4x4 Board

i brought the advanced adapters dual trans kit from marks 4wd, stripped down to fix a oil leak from gear box and the teeth from the coupling in the duals adaptor has worn teeth and the out put shaft which it drives has teeth worn not even 20,000km old any one else have this problem?

Worn as in mega chewed or you can see some marking on it post up a pic of it.

bit different, i run dual GQs. the adaptor and dual transfer case kit is Marks. the adaptor kit didnt fit and needed some trimming ofthe input shaft.
put up a photo for everyone to checkout.
but they have copped some flamings on here in the past.