Project Yellow thing - coming to an end

[John1.4]

riiiight, emissions have come down some, from the 5% CO it was to 0.36 at idle, and 0.49 at 2750 revs, hc at 131 during the run, and 221 at idle, lambda the only consistant thing at 1.03, and a bit of a missfire on the run,


seriously unsure now, it's close, but not close enough to pass, lambda is ok, cat is fine, temp sensors are reading fine, it had new plugs in august (may check the plug gap again tbh) and i adjusted the valve clearances about 3 months back (gonna check those again as well) no idea what could be causing it

garage guy (the owner not the other shit tester) said it may well have excess carbon deposits on the valves causing them not to seal sometimes, i've got 1 week to figure this out, then if it fails it'll be meeting it's maker