looks like it works! the only issue i can see is that with multiple HDHR devices, the EST/PST control shows up in each individual channel options pane, but the state of one tracks the other. which is the right thing to do but it implies that they can be individually controlled.
thanks for adding that - i got no response to my support ticket at SD… maybe they are contractually bound not to let people change their TZ? being in the wrong timezone is not that big of a deal to me since we never watch live TV. although if i choose a different VPN endpoint this is going to get messed up again.