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Message: <blockquote data-quote="kilohertz" data-source="post: 82260" data-attributes="member: 6974">So I cranked down the manifold this morning after the high heat RTV set overnight and fired it up. I started right away and ran way smoother. I had a vacuum gauge on the intake and as the seconds went by, the needle smoothed out and the vacuum increased, indicating the valves were seating again. Yeah! I set the idle speed and governed speed and ran it for 15 minutes. It's much better and runs great again. Going to get it off the trailer and plow the driveway and hopefully she'll be back in good working order. I checked the compression after it ran for 15 mins and #2 is still only 30 psi with the others at 60. It may come up as it runs in. I didn't want to get into a valve job at this point, broken head bolts etc. but will do it this spring when it warms up and drys out.What I learned here, is valves can go out of adjustment and should be checked more regularly. I only have 200 hours on the machine since I bought it so maybe a tune up every 50 hours is in order.Thanks to all who helped, much appreciated.I think that's it for now.Cheers</blockquote>