5% max for the Moki, unless you want to chase the needle forever. I would take the cline off until you get the engine running properly. The K&B 1L or any other cold plug should also be used. The low end should have a great impact, if you are not getting much of a change pull the disc out and make sure the metering holes are in alignment. I've found quite a few need to be shimmed to work properly.

Mark M.