Thanks Norm

Luckily, I have a side pull for spares (dont know if its points or electric ignition though) with good spark - but straight fuelled engine. Is there a difference between points and EI coils (besides having the EI module)?
Its a mid 80s MSAA craftsman Standard with steel deck and nylon bush wheels - so probably points ignition.

Tried 3 different plugs in the Commando (just in case) and the wire to the block - didn't make a difference.

The HT lead is a bit short though - what do you use to bring them back to the required length?

Thanks
Tyler