Hello all.... I’m very new to the RC world. So I bought a heng long tank with the 6.0 mother board everything works great turns left and right by the controller the way it should. Then I bought a mato metal unit with the mato metal gears and motors. I put the heng long 6.0 mother board and everything else in the lower unit. Now the controls are backwards but just left and right not frontwards and backwards. So I switched the wires around thinking this was the problem but then the back and forth was backwards. So I don’t know what I need to do? Please help. And remember I’m new to RC sorry.