Thanks Nick, I'll give all that a try. And don't sell yourself short...there's always somebody who knows more, but you're way up there...just look at all those neat little micros you built, and all you've shared online about micro electronics. You're a hero in my book, I always appreciate your posts because I learn something. [8D]

gfl, I hung longer, heavier wing extensions on mine, see the above post, and had a similar problem. Read microbuilder's response above, maybe that will help. I don't have the droopy wing thing (which I think would add in anhedral, which would add instability. The fishing line might add enough drag to make it worse, can't say. When I taped mine, using very light weight but very sticky colored tape I got from an online tape supplier (it's in a thread, I can't find the info right now) I stuck the tape to the extension first, butted it up against the AA wing, then pulled the tape toward the fuselage as I stuck it down to the AA wing, to lift the wing tip up and put tension in the tape. Then quickly taped the bottom too. It's solid and no droop, you can probably see so in the picture.

The spiral dive may be like microbuilder said about mine, that one wing is slightly lifting more than the other. Once I get the cg balanced, I'll do power off glides and trim as needed. Maybe the same will work for you.