exhaust valves

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Does anyone have a suggestion on how I can get my #1 exhaust valve freed up without removing the cyl. head? I have the exhaust manifold off and have been soaking it with zep45 penetrating oil and applying a small amount of heat to the valve guide but no luck yet.The car,29 super 6 ran great in the local July 4th. parade no overheating or other problems.Also what kind of compression numbers should a good engine have?Thank for any info Doug