Thanks for your reply.Yes,I made sure rack adjuster was backed off....good idea to remove the o ring before finally tightening up the cover.....hope it still seals after all my attempts!It seems to be the worm that overtravels on RH lock even if biased to the LH side.Have ordered a DVD from Landyworld ,see if it has the answer.
Cheers
Geoff
Cheers
Geoff