18-09-2020, 08:19 PM
You say the valve gaps are correct, but have you eliminated the possibility of a sticky valve as Tiger suggested? I think this could produce the intermittent symptoms you describe.
If this is the problem, I clean my guides with one of these in the electric drill. They work really well, but I can't remember where I got them! Maybe someone on here will recognise them.
If this is the problem, I clean my guides with one of these in the electric drill. They work really well, but I can't remember where I got them! Maybe someone on here will recognise them.