Cougar KC gear diff case screws

[cjm_2008]

Hi,

I'm in the process of converting my KD to KC spec & I'm stuck with a gear diff that won't seal.

Despite using a good quality hex head & making sure the internal gears were seated properly, the hexes in the screws have rounded off! Very annoying. I can't tighten them to seal it up now.

I really don't fancy buying a whole new diff, but I can't see a way of getting the screws out (made of cheese?!).

Did anyone else have this issue?