Right... I've been to see Alan's Alfa, and can report the following:
1) Clutch rod was a couple of mm out - it was around 26.5mm before I started. This was adjusted using AlfaDiag and Smaky's excellent how-to. The clutch was bled, and the calibration routines run. Afterwards, the gearbox was a lot better
2) Fault codes were read (after clearing them(, which yielded:
Engine ECU: P0340 (camshaft position sensor), P0571 (cruise control brake switch) and P0155 (lambda sensor heater bank 2 pre-cat)
Sele ECU: P1760 (no brake signal), P0725 (engine speed no signal).
I'm assuming that P0340 and P0725 are related to a faulty cam sensor, which may also explain why the rev counter isn't working and starting takes a little more cranking than I'd expect. The engine isn't revving over 3,000 RPM either, but it seems to be cause by limp-mode, not a dud MAF. ALfaDiag is showing that the engine speed sensor is ok, so I'm attributing this to the TDC sensor as well, unless anyone has another explanation?
P0571 and P1760 are also suspiciously similar, and my guess would be a faulty brake pedal switch (the brake lights come on though).
The other fault code is obviously a lambda sensor in the downpipe. Does anyone know if it's the right one or the left one?
I also had a look at the cambelt, who's history is unknown. It looks 'reasonable' (but I've advised it be changed asap, especially as the TDC sensor need done, and the variator is starting to be noisy). I did find a completely snapped balance belt, which was extracted before it could do any damage - a lucky escape there!
Anyway, it's a nice car you've got there Alan, and to get it running is really only going to cost you a routine belt-service, plus a few odds and sods
Good seeing you...and you're welcome to come up to get the rest of the work done