The HL drive motors are wired backwards from the Mato too.
I upgraded my Mato Sherman to a DBC system, but I think the IBU systems are better and have less issues. I have the IBU3 system in one tank, and the DBC in three tanks. My next upgrade will be an IBU.
I still have my original Mato circuit board just sitting in a parts bag. It worked fine when I pulled it. You want it?