eCS 1.2 Uniaud fails on T21

[Dave Cull]

I have both eCS 1.1 and 1.2 running in different partitions on a T21
When I boot 1.2 the Uniaud sound drivers work for a short time and then fail.
The harware manager tells me that the sound card and the usb controller are both using IRQ11. Perhaps this is the problem?
When I boot 1.1 there are no shared IRQs
Two questions:
Is there some way to make Uniaud work on a T21?
if not
What is the easiest way to replace Uniaud wiith the IBM sound drivers for this machine?
Hoping for some expert advice
dc