Perhaps it doesn't like double sided ram? My CSA 12 Guage would act wierd with a double sided simm with OS3.1 kickstarts; then again it acted wierd with 3.1 kickstarts anyway..
CPU chache does make a big difference (I did a VERY tedious assignment testing performance of CPUs with L1/L2 caches in different sizes/configurations).
I would have to say, read up about this accelerator, find the correct 040 lib and latest setpatch. It's not running/had been running overclocked? Does it boot OK with no startup sequence with CPU cache turned on?
A (very) long shot... clean the SIMM/slot and CPU edge connector with metho, and try (very carefully

reseating the CPU.
Short of finding known working 60ns FP ram I don't have any other ideas..
- Paul