Finally got my Beat back on the road after 3 months. Capacitors in the ECU had all blown, distributor was cracked and HT leads shot.

In case anyone is having ECU problems, my auto-electrical engineer desoldered all the componemts from the board, sent it for acid washing, then soldered on all new components, tested the board and got it working for less than £200, compared to the £400-500 you can pay for a new ECU.

Its now running like a dream If anyone wants his number, please let me know (Northants here).

Also, thanks to Steve M for "rescuing" the parcel of parts from the Post Office crusher!