Anyone using HP 4890 scanner?

[AnselAdamsX]

I just picked one up for $170 but it has some color casts. I have a pro scan of one of my cromes from a local lab which uses a Fuji Finescan 5000. The HP does better than I thought it would. Biggest problem is color accuracy and shadow detail. I can live with it if I can fix the color casts. I was wondering if anyone has used this scanner and what software they use to calibrate it?

Thanks
Chris