Glad you got some help coming.

Sounds like a good purchase. I'd hazzard a guess that the seller could have been scared off by "FEAR OF TIP STALL"!!!!! He probably saw a less experienced flyer lose one of those semi-scale Aerobatic planes like the Extra, Edge, Giles and then heard the discussion about how they all fly. Heck, he could have seen an experienced flyer lose one. They will all bite you if you let 'em. Actually, they bite themselves. They're made to stall. That's how they do their snap maneuvers. And it's in the design, so bandaids like adding washout don't do a lot to cure them. Keep in mind that tapered wings stall from the tips naturally. And when one wing stalls, the sucker rolls out of whatever you were trying to do. Unless it was a maneuver that needs a stall to do.

This is a beginners forum, and beginners really should learn early on about wing planforms. Models with tapered planforms should be left until the beginner isn't a beginner any more.