ORIGINAL: gaRCfield
Hmm, maybe it's too heavy? I added after market landing gear, but definitely not a pound of additional weight. And axles and a small strip of ply, and lots of epoxy. For repairs I added 4 small sticks of balsa, 2 medium sticks, and glue. Removed the pilot in the canopy, which probably weighed as much as all the balsa I added.
Should I weigh my plane? Loaded with gear and engine?
HA! No way it's too heavy. I currently have a scale model in my hangar whose wing loading comes out to 43 oz/ft^2 and it flies fine (if you fly on the wing and don't have an engine quit
).
Do you need to send in the receiver? Well, that depends on how much risk you are willing to accept. I always like to mitigate my risk as much as possible, so I would send it in. Since I fly some pretty expensive stuff I always send in my transmitter during the winter for a checkup as well. That's probably overkill for anyone besides an anal retentive nut though.