I tested it already, 1 minor & 1 major problem
- the battery occupied all the parallel space, I dont want to install the servo on upper deck as TA03R original servo position, otherwise I need a similar FF03 lower deck
- the battery width is more or less the same as lower deck, all the screw holes cannot use & how to mount a battery holder?
- a all new DIY battery holder is too time demanding for me....