OK, so retest today..all fine apart from emissions. Failed last time being too high @ 7.5 so i wound the pot back 2.5times and marked it..try again

bloke said it was still too high so he's "had a fiddle" and managed to drop it a bit. Now what can he have been fiddlin with, cos the co pot hasnt moved..like he'd know where to find it anyways.

got it booked in for a tweak with a wideband sensor as, stoopidly ive not had it checked since i bought it, so hopefully ill get it dialled in.