I never tried the A3. I did try the 8 and the F plugs and neither of them did me any good on any of the engines.

Maybe I can give them a second chance on something that I build for the express purpose of checking out these engines. I have them on consignment at the LHS just to get rid of them but no one has even looked at them.. they are not that popular in our area.

If it's that simple a fix then I will be truly surprised.

CGr.