LUK, could probs get it cheaper locally. Might be able to get a Sachs with a bit of discount too. But my current one is Sachs and if it is the clutch that has gone, I'd probably try a different one.
Very stange for a Sachs to have such a short life, both Sachs and LUK are really good choices.
Yer, I'm going to try adjusting the cable in a bit.
I went to St Austell (2 hour round trip) with 4 people including me, and I noticed it had got a lot worse by the time I got back. Seems odd that it went very quick from slipping a little in 5th to slipping in 3rd!
Its only when I come on boost too.