An update:
After a week or so of relatively smooth and stable use, I'm pretty sure that problem 2b (regular, frequent pausing) was due to an extension, "VNC Patches", which was on the SE/30 when I got it.
I think that 2a is a simple matter of non-32-bit-clean software.
Still waiting to get bourns filters to take a crack at fixing Problem 1, the non-writing / initializing FDD.
In the meantime, when data disks made on my Classic are put into the SE/30 with their read-only tab in place, it keeps the SE/30 from corrupting them after reading.
After a week or so of relatively smooth and stable use, I'm pretty sure that problem 2b (regular, frequent pausing) was due to an extension, "VNC Patches", which was on the SE/30 when I got it.
I think that 2a is a simple matter of non-32-bit-clean software.
Still waiting to get bourns filters to take a crack at fixing Problem 1, the non-writing / initializing FDD.
In the meantime, when data disks made on my Classic are put into the SE/30 with their read-only tab in place, it keeps the SE/30 from corrupting them after reading.