[Backlash]

Have you got the little limit switch connected up under the 5th wheel?

Have you got another battery to try?

What exactly happens when it shuts down in top gear? Do you just lose drive, or do you lose everything (i.e. no steering, drive or gearshift)

Does it happen as soon as you select top gear, or can you drive it for a while?

What do you need to do to reset the truck..? Is it just a matter of selecting 1st or second gear or removing the trailer, or do you have to turn it off, and then back on to get it to go again?

Is your radio 2.4GHz, or crystal type (27MHz, 29Mhz or 40Mhz)??

Have you used this radio with the MFC before?

Is it an MFC01 or MFC03?