Kaypro 10 Hard Drive Help Needed

My Kaypro 10 Hard Drive has begun to give me some problems lately; the drive itself is failing; there are too many bad sectors when I try to re-format. The present drive is a Tandon TM502 (MFM, 305 cyls, 4 heads). I picked up a couple Seagate ST-412 drives as replacements, but am having trouble getting the Kaypro to talk to either of them. As far as I understand, they are the same specs as the Tandon, but when I try to run the format program (K10HDFMT.COM), it reports a "Drive Not Ready" error. There is a terminating resistor pack on the Seagate drives. There is also a DIP package with jumpers on it, three of which have been cut. My question is this: are there any physical jumpers which need to be set correctly on the drive or the Kaypro, or is there a "Setup" utility which must be run? Any info on the purpose of the straps on the ST-412 would be very helpful. If there is a more appropriate forum for Kaypro troubleshooting, I would appreciate knowing where to go; I haven't been able to turn anything up except a few web pages of people who have Kaypros in their collections. Thanks!