Hydromattic

Trying to mod my gt3b so that the 3rd channel will act as my fuel mixing to adjust my needle on tunnel boat as im racing on the water the 3rd channel works only as 30% one way an 30% the other. i am wanting to mod this setting to where i can get full use of my servo to where it adjusts like my steering or throttle trim 100% an 100% both ways. I have seen a company that does this modification to the flyskys an just woundering if anybody has used or heard of them OVERKILLRC.Com any info would be great thanks to those that reply

coriolan

http://overkillrc.3dcartstores.com/Flysky-GT3B_p_8.html
OverkillRC has been around for a long time and offer re-flashing mod for the GT3b&GT3c. Haven't used them myself but some club members have with satisfaction!
You can contact them:
https://overkillrc.3dcartstores.com/...tion=contactus