Thanks for all the help - took me about 10 goes in the end! For something so simple it has the capacity to really go awry - got it all done a couple of times at least, then disaster - revved the engine during the 20 sec idle period!!, another effort ended when i forgot to dip the clutch and was wondering why it wouldnt start!
Anyway it seems tons better, idling at 800 with ac on and no problems during my test drive - no flaring of revs when declutching, much smoother tooling around the village - so hopefully i havent fried the ecu!
Right, just the oil leak to sort, drivers seat to refurb, front wings to polish........