KO Esprit 3 2.4Ghz range problem

[jenski]

I have recently bought a Ko Esprit 3 transmitter with 2.4Ghz and 40mhz modules.

I am having range problems that went the car goes around 20 metres away it just stops and if I walk towards it it come back to life. I checked the receiver wires and they had been cut short go got a new one of those and tried it again and it went a little further but not far enough if I am racing at a big track.

I have tested it back to back with the 40mhz module and I can get it about 35-40 metres away before I ran out of road.

Any ideas as this is doing my head in.