Hi all, I have this UD33 controller that works perfectly with another newer SMD disk (CDC 9720), but when I try it against my beautiful old Fuji 160 (M2284K), It gets through format okay but has intermittent errors on verify / reliability test. If I reduce the number of cylinders / heads, I can get it to pass, but not every time. I have a good thick ground and same cables that worked perfectly with the other disk, hoping that's enough of a sanity check on those. I have the UD33 configured thusly: type: 1 units: 1 sectors per track: 32 physical heads: 10 physical cylinders: 823 spare sectors per track: 1 spare cylinders: 2 configuration bits: 6 LOWER RPS: 3 UPPER RPS: 7 split into one drive with 1 head and the other with 9 heads to speed things along :) GAP 0: 259 GAP 1: 4112 GAP 2: 780 Spiral offset: 1 The drive's switches are set for soft sectoring and tag 4/5 enabled. I had tried hard sector setting on the drive with 32 sectors / 640 bytes. It's SO CLOSE to working I can taste it :). I have another Fuji 160 that is doing basically the identical same misbehaviour. And as usual, I am just not quite understanding the final clincher piece. Anyone know of better settings I should be using and most importantly Why? thx jake P.S. I was hoping that somewhere someone would have written down what controller settings work with the UD33 or QD32, etc, but no luck finding them. You'd think despite the 3 or so years gap in the disk vs controller that this would've been officially supported at some moment in the universe, no? I just wish I knew how to calculate it properly myself!