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My Rotax 912ULS has been using oil since new. Lockwood Aviation tells me this is not normal. I experienced reduced RPM on takeoff July 4 and had to return for landing. my first since returning from the June 22 Zenith Fly-in at the factory. #1 cylinder has low compression and badly oil-fouled plugs. I have only one year and 68 hours operation on the engine. ASB 912-062 applies only to cylinders 2 and 3 and not to my serial number. Anyone experience a similar problem out there?