Coincidently, I was fooling around with that setup last weekend. (yes I had too much time on my hands)
Using the settings from this site:
Satellite look-angle calculator
I got signal strengths of 64-70 0n 61.5, but 72.7 was down around 45. Then I tweaked the skew to give 72 a little more gain (taking some away from 61.5) and repeaked.
Now signals from both sats are solidly in the 50-60 range.
I did notice one little oddity, however. The receiver would not download the program guide, but I'm 99% sure that's because I was using a 311 receiver as a test rig so it couldn't download the mpeg4 guide from 72.7
When I get a chance, I'll hook a 211 to it and see what happens.
Other than that it was a regular Dish 500 and DP Twin...no modifications.
Also keep in mind I'm located in FL, so results may vary as you head West.