I'm almost sure that I remember manually changing the pad freq's myself. It's not hard to do at all.
I really like the look of Heinein Base. I use the landing pads for smaller ships, and the big landing field for XR-5's and DGEX's. Once the UCO addon is out, those domes could be used, and people to doff their spacesuits. I haven't tried UMMUFB on it yet though, but it ought to be cool.
Once I get the HLV missions (from Mustard's site) mastered, I'll go back to Heinlein and Niven. If you haven't got Niven yet you are really missing out, it's great (and dying to have UMMU).