ORIGINAL: MsgtRob
No problem, I'm TDY sitting in a hotel room wishing I could be home flying! Not much else to do tonight.

Sounds like you'll get it dialed. I picked up a few hundred RPM after the first half Gallon but seems stable now.
I highly recommend using the tach for your next adjustments. I adjusted the high end after each low end adjustment and just kept doing it until I ended up with 9500 max (backed off to 9200) and smooth transition with rapid throttle transition. You don't want to be ''slow'' with the stick during these adjustments, idle- 10 seconds/ Slam to MAX/ observe/note symptoms (if any ) return to idle/ adjust/ repeat. It took me about one full tank on the ground and a good tach. I havn't touched it since and have over 2 gallons through the motor.

What is your Max RPM? Idle RPM? Watch out for 4-stroking! If you go full throttle and the RPM starts sagging, you'll need to richen the high end, IN A HURRRY. It can throw the prop and possibly sheer the hub key.

You should have NO trouble powering a 10 lb plane with this engine even with an 18x6. Mine pulls my 12 lb giant stick straight up and out from the runway. It has enough power to slowly pull the Giant stick out of hover but that's not how I usually fly it. I use my GS Extra with a certain 55 cc in it for that.

I use CF props on all my gassers and have had NO problems except the Belle props from TBM were very thick in the hub and kept me in the 8000-8500 Rpm range. I'm looking for a Mejzlik 18x8 and hope to be in the 8500-9000 RPm. Most we can expect without a pipe.