Bought a $4 Tower 40 at Lebanon on Saturday. Engine stuck solid, looked creepy crawly, the carb held on with a single screw, sort of. The fellow selling kept saying you don't have to buy it, don't buy it. The price at that point was $5. Figuring the back plate was worth $6 or so, to use as a cover plate for an LA46, I offered him $4. With evident disgust he handed over the mossy looking (some aluminum discoloration etc.) lump. Saturday night, air tool oil and a heat gun freed up the beaut. Compression felt good. Popping the top and back place, more discoloration on crank and inside of case, no damage far as I could tell, the bore clean and shiny. Stuck a .265 (small FP40) Lee venturi into the spigot, an OS needlevalve, new thunderbolt plug. On Sunday at the field the engine needled nicely and evenly, saw 13,000 for a whisker on the tack, turning an APC 10.5x4.5. with %5. Felt user friendly. Good vibes. Transitioned smoothly from sloppy rich to lean. Dan Banjok using his best guru/oracular tone, said, not bad, go fly. I will put this engine on a sport plane next week. Might play with head gaskets, could be tunable for stunt. Ugh. That makes 10 Tower 40s (plus 13 FP40s or FP35s)... I thought I'd overcome my obsession... MY ADDICTION!