RE: ParkZone Super Decathlon Review
The prop removes easy by pulling off the spinner and unscrewing the nut.
The cowl can be removed with a single screw after first peeling off the black sticker. The side decals must be either cut or peeled back. I choose to cut mine at the cowl edge.
The power system looked neat and easy to repair. Note that the motor is reversed so that it can still spin in the forward (CCW) direction in the gearbox. I thought this was a clever design overall.
A 0.1oz nut was wedged onto a plastic post in the front of the cowl. This was most likely a fine adjustment to the CG. Since my plane flew perfectly straight when the control surfaces were at neutral, I feel that ParkZone did a good job in both balancing the plane and obtaining the correct thrust angle.