NickoPen wrote:wow. maybe I'm doing something wrong then? I currently have 138/140 running premix on my mc18, although I haven't run it hard yet - that's how it was when I bought it. Powerjets are still in and its a cold day if the maximum is below 22 degreees C though.

If your running an open air box and pipes you know it pretty quick once you open 'er up. If your as lean as we think you are it will lock up in about 5 seconds. It is possible your jets were drilled though. Its better to start rich and work your way down. How are your lugs looking?
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