Well, to be sure, SOMETHING'S going on. 20lbs is heavy.

Some questions though...because that setup seems pretty...well..it's different.

8 servos? For what? I can't see more than 7 in that airplane...2 aileron, 2 elevator, rudder, throttle, choke (Granted...I haven't built this airplane...so maybe it DOES call for more)

2 4.8 V batts??? You're running that whole radio system on a single 4 cell battery then??

Did you acquire this bird from Wildhare, or a third party? When was it acquired?