Nosram Matrix evo problems??

[MHeadling]

Hi Guys, having a bit of trouble with my Matrix evo, it's been in my TC and worked fine for a year or so, put it in my x6 and having probs!

From low rpm it cuts out, you turn the rotor and it works fine then every now and again it cuts out from low rpm and stops, sounds like cogging to me?

Iv tried a new sensor lead, new motor and set it up again

Any ideas or shall I send it to Mirage??