Jitter connecting a Presonus Firestudio to a 410 thru s/pdif

[rrubbenn]

Hi everyone I'm trying to use a Presonus Firestudio Interface connected thru s/pdif to a m-audio 410 (so I can record in PT with those excellent pres), every setup on their interface software are ok and works pretty well with other software as logic and itunes, but when I try to use with M-Powered the jitter appears, so basically the problem is in PT. Does anyone knows how can I fix this?

Best regards,