First, being late to the party, this looks pretty sweet.
Now, I'm using the Steam version with GWX3G installed. I feel a bit stupid but I can't for the life of me find the old manual/auto update button for the TDC. Am I just being blind or was it done away with?
Never Mind, I was just blind as a bat

Found it. Now my next, and hopefully final question:
On the attack scope screen, there are these dials on the left that don't seem to do anything. I can't manipulate them, they just stay fixed in their positions. How do I use/read them?