I have the Delfina Lite running with this:
- OS3.9 BB2
- delfina.library (4.16b3 patch 2)
- AHI 4.18
- DelfInit 2.1 in user-startup ("DelfInit QUIET")
In WBStartUp I have DelfTweak script that overclocks it to 60MHz.
That works fine. Only differences seem to be BB2 and AHI version. Maybe you could try AHI 4.18?