Hey cholla, I thought that particular test wasn't applicable to Direcway users. Anyway, I have done some extensive testing with my connection and an MTU of 1500, MSS of 1460 have shown to produce much better SpeeDs, at least for me. The correct RWIN can also help out quite a bit. Thing about Direcway is, everyone's system is a little different. 256960 works very well although I haven't used that value for awhile.
NeeDSpeeD