RT-246 and RT-524 bench breakout box

[Mogman]

I picked up this breakout box off of Fleabay so I could test my radios with about 20lb shed in the form of the mounting base and when they are not in the vehicle.
Everything works fine except on the RT246, if I put the radio in auto channel select or press the tune button is rolls down to min. frequency and "dead heads" the control motor.
I suspect it is because the base has some jumpers that the breakout box does not have.
Does anyone have experience with this setup?

 

[Mogman]

So I tried the RT-246 in the MT-1029 base and still have the same issue in remote so now I am not sure if the radio has a problem or the lack of connected ancillary equipment is the problem.