1) CG should be 1/2" ~ 1-1/2" forward of the top wing center-chord aft cabane mount. You will come out very nose heavy w/ a Moki 2.10 unless you mount 3 servos + battery pack @ the tail.

2) As for mounting the motor, the furnished motor mounts are crooked, so you will not line up right if you follow instruction. Just locate the motor mount *experimentally*.