Thanks for all the great input guys. One other question I'm a little embarrassed to ask but you all seem to be nice people so I'll bury it in this thread......

I'm not at all sure what size Evolution engine I've got in my RTF Arrow. The whole package was advertised as an Arrow 40 but the engine appears twice as large as my other OS 40's. Flight times on the 11 oz tank are less than those with my others with 8 oz tanks. I note that Hangar9 is very cagey with the documentation, always referring to the "Evolution Training System" but never specifically mentioning an engine size. I can find no indication on the engine itself, other than an "alpha" character where the engine size normally goes. Is it really a .46? or .45 if there is such a thing?

This is all pretty spooky....

-- Mike