IIe Backup

[Robert Boucher <boucher1@alumni.texas.net>]

I have used a IIe forever. The current one has a 8mz Zip Chip, 1 meg 
Ramfactor in slot 6, CFFA card in slot 7 and an Apple high speed SCSI 
card in slot 5 used to make backups to a Zip disk. This setup has worked 
for many years; about three weeks ago the computer would not see the 
SCSI card. I could re-seat the card and it would work for a few days. I 
cleaned all the contacts, swapped positions  on the Ramfactor and the 
SCSI card. Same problem. I have since used different Zip drives, many 
different Zip disks, swapped power supplies, etc. Now everything seems 
to function, Copy II+ can copy to, catalog and verify the Zip disk, and 
yet when I try to load a file from the Zip disk, I get a Cannot load 
file on those files that have been saved since the problem started. 
Older files on the disk, i.e., Expenses.04.DB, will load properly.

Also I THOUGHT I had the Zip Chip slot setting for the SCSI card set to 
high. Now on high the Zip drive locks up. The card seems to function 
(see above) on the normal setting.

The slots in the IIe still seem to be fairly tight. If it is a  
motherboard problem, will a MB from a IIe case without a numerical 
keypad fit my present case with a keypad?

After seeing my frustration on this problem, my wife suggested I move 
everything over to my iMac G5. NOT YET

Any other suggestions?