Yeah, me too. Should have said that the new coil and leads DID make a difference, I had the same misfire with the new with a .65mm plug gap whereas I had to gap the plugs to .5mm for the car to be more or less driveable with my old leads and coil.

Whether the improvement is down to new leads and coil, or, the grp A coil alone I am not sure, and I certainly can't swap new for old again to find out at the moment (see above post) !