Wait... this thing is locking up or acting stupid when using a Turbo EverDrive with roms, but from the sound of it does NOT do so with actual HuCARD games?
Funny thing is, I have never had issues with my EverDrive. I use a rom set that I went through and divided up by region/hacks/translations, and have never once had the TE lock up my system. However, others have had issues with roms they had, that did just that. Fixing it was as easy as directing them to my set.
I guess the system should be tested with a real Huey to see what it does. Then just go from there.