Cogging? LRP Sphere 007 + 6,5t

[dewil]

Hello guys!
I recently bought a Lrp sphere 007 with an Lrp 6,5t motor to use in my Lazer ZX-5. I have noticed that it hesitates a little when giving full throttle from a stand still and a guy at the club said it was cogging.

How can that be? it is geared 17 / 78 wich should be pretty low and I use standard settings and a team orion carbon lipo battery.

Is my gearing too high or is something wrong with my system or settings?

Really would epreciate any help.
Best regards
/Will