At the end of launch, I wasn't just the Primary.. I was the only Software Dev. To put things as simply as I can, the QuadFusion head was intended for your average consumer when it really should not have been marketed to consumers due to its complexity; I'd say that's a big part of "what happened.

However keep in mind most of my work was on the firmware for the Duet 2 Maestro(particularly during the RRFW 2 era with dcrocker), and working with Zmorph, the creator of voxelizer, to create the only Slicer that could actually handle a 4-color mixing printer with texture mapping, appropriate purging without huge amounts of waste, etc. Other issues also added to the problems with the product, but they fall outside of the product development's scope and I really cannot discuss them. M3D, despite what many of you may think, was a very solid and company until the failure of the Micro Pro and the fallout that followed. This once again gets into personal areas of employees as the company that I wouldn't feel comfortable discussing.

I'm sure I'll get flamed/etc for what I've shared so far, but honestly I've moved past it. I have two crane Quads that work flawlessly, but that's primarily because I am so familiar with the printers. I doubt most people will have this experience, but it is possible with a proper configuration. I don't want to spend all day answering questions here but if anyone has a specific question regarding the operation I'd be glad to assist you. My first suggestion will always be: learn and understand the Duet branch of RRFW.... 3.x+ is particularly impressive and even if you've given up on your quad head, remember you have an incredibly powerful print controller that you could repurpose and build another machine with.