Looking For the MA rock or board splitter

That thing is hard to spot it is in buydebug. Not near my game right now but on the far right corner when in buy mode there should be a icon that looks like a "star" click it and set the filter to WA items.

In buydebug it’s over halfway down the page, it is below the training dummy (not directly below though you have to go down more).

Try filtering buydebug/Misc by the WA items.