[mcorrell]

I agree with what others have said. The compression results are great if you have a stock head. I'd say the valves are OK too. If there was a significant leak at any valve the compression would be lower. A leak down test is usually done to determine the cause for low compression.
The vacuum fluctuation could be due to carb adjustment. You might try tweaking the low speed mixture screw in/out. If not it could be a sticky valve as others have mentioned. Do you notice any backfiring or popping? How is the overall power?