scsi, ydl and 2.4 kernels

[Barry]

I have a G4-450 with two internal scsi harddrives and an ATTO pci card 
(and no IDE drive.)  This setup has given me many headaches.

I just installed YDL 2.3 (after years with linuxppc), and I couldn't get 
the 2.4 version of the installer working. However, the 2.2 version 
worked fine (actually, it was phenomenal -- a really great job by 
Terrasoft ), and now I'd like to upgrade the kernel. Before YDL, I've 
tried several prebuilt 2.4 kernels and never succeeded. I also tried a 
few times to compile my own, but I couldn't get the configuration right 
-- it appears to have problems reading the scsi disks. I also want high 
memory support in it.

So,

1. Might any of the four ydl prebuilts work?
2.  Does anyone have a config that might help?

While I'm at it, I'm curious:

It seems the hfs bootloader partition must be exactly 10mb. Is that 
true? And is it visible in the Mac OS9 (I have 10.2 on a small 
partition, but no 9).

Thanks much,

Barry