It's been a challenge to build this biplane since you din't have the build guide for it. Since I'm already been building a couple of plane from flitetest and other source, it's easy to figure which is which.
For biplane, it always a challenging episode in finding the correct COG for it. I'm using a found image on the net to determine where is the CG for your plane design and end up with 2200mah lipo to have a proper balance.
This lead me to a 780g of AUW for this plane. And I already put the lipo next behind the motor mount. The nose still didn't barge down to make it slightly nose down for safe maiden. Could you please put some picture on how your's balance with the CG? Issit a bit nose down or a level position?
Anyway, mine didn't fly. Taxi take off failed and also hand launch failed.