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Message: [QUOTE="FNG, post: 1399265, member: 89198"] [B]Real crisp is not mandatory fortunately for me! I would sure tremble to see what the price is now.[/B] I am with you on this one Bob :cool: I too am a tinkerer but I have "mostly" stopped modifying motors. Long story that involves my wife and one particular motor I grenaded 4 times in a month. I followed Eric Gores recommendation on my '95 YZ 250 and recut my squish so I can run pump premium. The stock timing was the same as what was in Erics' book per my svc manual and my findings on the bike so I left that alone. I lost some hit but gained some over-rev with no appreciable loss on the bottom. [/QUOTE]