AudioEngine A2+ riser - gridfinity base

I've started using gridfinity to organize my desk/workbench more. and wanted something to put my speakers on with it. Using the gridfinity bin generator in Fusion, I made a base bin, then made the angle from planes. Since my speakers are already on monitor shelf, I didn't need as high of an angle. The “grids” are half-sized (21x21mm), as the fusion generator doesn't do half-sizes otherwise. For the AudioEngine A2+ speakers, the stand is 2.5U wide by 3.5U deep. I didn't want to use a full grid round-up because I didn't like the look of having something bigger than the current stands I had (reproductions of the DS1 stands from thingiverse). Plus, the half-size lets me put pen holders or something along side. Unfortunately, to make this for bigger/smaller speakers, the bin has to be regenerated. I tried adding the parameters into the generator, and then changing them with no luck. But the f3d file could be used as a reference for the extrusions/angle planes. If anyone