Boy you dodged a bullet that time! Glad you got it back down OK. I wondered when I saw your comment about the high-torque micro for throttle servo. I have no experience with Airtronics equipment, but I know they're favored by some pattern fliers. A normal carburetor throttle should move easily, requiring not much at all in the way of servo torque, but I have seen some that find something to catch on or get sticky in some part of their range. I've been known to use the Hitec 85MG for throttle servo, but I always feel better when using at least a standard servo, and often standard digital.

If a servo with a mind of its own starts thinking independently on a control surface, that of course can easily be fatal. On throttle it may not be so bad, unless it goes to full in the pits when you're not paying attention. I hope you send it back to the mfr and give them a blast. I suppose the trouble could have been interference, but manufacturers need to know about this stuff when it happens.

Anyway it sounds like one more happy Venus flyer, and that's great. Enjoy your plane, you should get a ton of fun out of it.