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Message: [QUOTE="lwsmithjr, post: 1131705, member: 35074"] Eric's contact info - [email]ericgorr@hotmail.com[/email] The question concerning the "stock" class is a good one. The rule states that the bike must start as a 125 and the increase in displacement can only be achieved by boring -- no stroking allowed. So, it really isn't stock anymore, but the only bike that comes stock as a 144, the KTM 144SX is not legal in this class because it didn't start life as a 125. If it were me, I'd make a call to MX Sports and get them to clarify it for you -- and send you a letter so you will have in writing what they told you. My carb is the same. It seems a little rich in the middle but I think I can fix that with just the needle. We are running a a PC pipe w/ shorty silencer and a V-Force 3. It seems to have really good snap off the bottom even though it's ported for mid to top. It would probably have more over-rev if we went with the standard length silencer. That snap off of the bottom really gives it a strong pull out of the turns though. The 144 will not pull as long as the 250F. In third gear roll-on's, a 250F is virtually equal with a 250T. But the 144 makes it a much more level playing field. If a 250F rider complains about competing with a 144, he ought to go practice more..... [/QUOTE]