TimeSeriesChart Change Time from UTC to MST

I am currently experiencing a problem changing the time in Time Series Chart. I have the data coming in correctly but instead of showing up at Mountain Standard Time, it is coming in as UTC (probably because the database doesn’t exist in MDT). I need to be able to transform this. The transform option in the DataSet does seem to work (maybe I am using it wrong) and I can’t figure out a formula to change it in the tag. I’ve also tried changing the Project timezone to MST and Client time but to no effect. Does anyone have a work around for this problem? Currently I need my specific graph to show 6 hours behind the time it is showing.

Thanks for any help!

@acasey, you had it right by changing the Project Timezone in Project Properties. Changing the timezone does require a gateway restart before it will take.