i just build a 300mm quad. with 4 e max 2300c motors. 4 12 amp esc bl heli bec 1r sv and crius power board . now is where i get stuck.when i go into the cc3d board and adjust the motors without the blades on on the motors spin up. but when i put the blades on the number one will spin up. the number 2,3,4 will have a shuttering effect. but won't spin up. i am not the best solder but. when the blades are off all four spin at the same time so i don't think its that. i soldered the motors and esc direct. no bullet plugs. so at this time i am at a lost. any info would help please. foot note using a fully charged 2200 lipo.