I can archive your disk content if you end up needing some assistance. I have a few Vector Graphic machines with 100tpi Micropolis and Tandon 100-4M drives as well as Mod-I drives at 48tpi. I also have utilities to archive and recreate disks on these drives by exchanging the disk image with a PC via XMODEM (FLOP2PC and PC2FLOP). Note that these disk images can also be mounted and run under SIMH. Mike