Got it working!
1 - Go to the Market and download the app: MSL Reader
2 - Use this app to get your MSL # (mine was six digits)
2 - Flash to any Sense ROM
3 - Launch phone dialer and dial ##GPSCLRX# (##4772579#)
4 - Enter the MSL Number from above
5 - Your phone will automatically reboot in 10 seconds
6 - After you're rebooted back into the Sense rom you can go and reFlash CM7
7 - Hopefully this fixed your GPS!
LONG PROCESS!
+1 to this. It is a pain, but it fixed GPS on my phone.