Altek AC-31 and 41

We installed an Altek AC-31 with GRASS4.0 on a Sun with NO difficulty.

I am hesitant to install my longed-for GRASS4.1 because of the
number of troubled 4.1 users trying to work with an AC-31. Are
there any of you out there who have successfully (and easily???)
done it?

-Nancy Greeley