Not sure if you ever sorted this but by 'main one' do you mean the default WinDMD provided by pinMame?
There are two ways to get rid of it. In script set .hidden=1, you should find .hidden somewhere in the script already
sometimes it is assigned to a variable which in my testing sometimes results in it not being turned off (ie. set to 0)
Also you can look in the registry, for tables with Roms, and you need to set key WinDMD=0 or if Freezy is being used, PinDMD=0.
I have issues with tables where both are set to on but my rig has been around a long time so I just know I have to go in an
set one or both of them to zero. Some tables don't use DMD at all so that's when you need both set to zero.
Also some tables I find perform better with pinMame DMD (WinDMD) instead of Freezy(PinDMD). Try each one according to
taste and need.