I set up NTP on the routeros to receive from Colorado.
I'm in Utah in MST but I can't seen to get the time the NTP server is reporting to work correctly.

It's still showing me as 7 hours ahead, though I put in -07.00 in the time offset field in winbox.

What am I doing wrong?

ntp should always be using GMT i believe ... the offset it only for display. Are you saying that when you have a client sync with MT its getting the wrong time?

Sam