Please avoid the mistake I made buying the VMAR 10' span Beaver. The fist engine installed was a ST2300 and this proved unreliable and was replaced with a Saito 180. The wing panel has a massive warp and I measured a 4 degree difference in wing tip angles. Assemble took 50 hours and I had to re-engineer many structural and flight control arangements. Most of the wood is not balsa and appears to be some sort of crate wood. The finished weight is 20.5 pounds and I used 9 standard servos.