Have any of you floppy emu owners purchased the acrylic kit? I am having trouble with the shafts of the acrylic buttons sliding off of the buttons on the PCB forcing me to open it up, realign etc only to have it happen all over again. Has anyone else experienced this? Does it sound like I did something wrong in assembly? I've considered taking a dremel to make the bottom of those shafts convex to fit over the buttons but haven't yet.