My only complaint with the Tower .46 is that the blue on the head and thrust washer faded almost immediately and looks kind of sick. As far as tuning an engine every time it is started, I always peak the engine out and then back it off a couple hundred RPM--wouldn't matter if it was running 30,000 when first started, I just do it. That is not to contradict BritBrat, who I think really knows his stuff and has many insightful posts to his credit. I suppose there are many people who just start an engine and go fly assuming the engine is still in tune. I just don't so tuning the Tower .46 is no problem. Just thought of another down side to the engine--it weighs about the same as a good sized anvil.

Max