postscript: Received the aeromaster. It is a great looker, and, flyer. However, the engine was bought from a modeler off of e-bay. The engine was listed as "slightly used" w/one gallon of bench time, and 1 hour in an edge. The engine had no compression, and would not fire. Took the engine apart, and discovered both bearings were shot, the ring was trashed, and the head had a broken cooling fin. plus there was a significant amount of moisture (water) in the engine, w/rust. A local repairman/friend ordered the new parts, and overhauled the engine. It now runs great. I installed it inverted in the aeromaster. The first flight ended in a dead stick. (the muffler vibrated loose). No problem w/the landing. The second flight also resulet in a "dead stick" landing. I finally determined that the engine was about 1 turn too rich. (it was intentional for break in purposes). After leaning out the 1 turn the engine runs like a fine swiss watch, and I am looking forward to a long happy life for the plane/engine.

Moral:: Be VERY careful buying used engines on the internet (or elsewhere).

P.S. The seller (who will remain nameless) refunded the original purchase price, after he was reprted to e-bays fraud dept. and I was only obligated for the cost of repairs, which was close to the original price.