hrm, I got some bad news for you. I don't think your burner CAN burn even 90min yet alone the full 99min capacity. to be honest, I'd be surprised if you got 85min to work. The problem is your burner can't support 90+min CD-Rs [V] . You *might* have a chance of 84:99...or maybe, just MAYBE 89:99, *IF* you get the latest firmware (you might already, I don't know) AND (and this is very important!) burn at no more then 4x, 2x would be better, or even 1x if you can. Slowing down the speed can have a major impact on recording capacity...I'm not overly sure why...but it does. Good luck!
if you are looking for a burner compatability list, check out http://www.enovationmedia.com/90min%2BBurnersFinal.pdf
I made the list myself, it's a compilation of the list the Feurio has, and that my store has recieved from different manufacturers. It's not 100% accuarate, because firmware plays a BIG role, but it is VERY handy as a guide.
Please let me know how things go, and what your maximum burning capacity is and I'll update the list.