Hi Stephen

The pistons are original (4k km on the clock). The bike is used on the road and has done a couple of track days since I got it. Regularly run up to 12K rpm in 4th and 5th (Cadwell/Oulton/M56)

The coils checked out at .3 ohm and 7.97 & 7.63 secondary. Are they knackered ?

Thanx

Phil M