I have a problem with my electronic ignition, indeed, I have no pointer timer, so I have to check the top point of the 1 cylinder, I marked the pulley and the block, but I do not know not how many degrees I have to go or back, indeed my customline does not have a top draw engine and the sparks plug are very black. So I think a small offset of the ignition and a setting to do with the carburettor.Thank you !