Well here's what I would do,first reset the skew back to wherever it was before you started.Then go through the menus in the Drake and look for the skew adjustment,it's gotta be in there somewhere.Once you find it and know you can control things with the Drake,completely remove the 905 from the system,the Drake will now move the dish ,control polarity and power the LNB's."T" the CW to the Drake,eliminating all the loss of the extra splitter and the 905 was causing to the CW.
When you want to change polarity,do not adjust skew,change the channel on the Drake,odd channels are one polarity,even chs are the other.The skew adjustment is for fine tuning not polarity changes.
When blind scanning do one polarity at a time,scan change pol scan again,you'll get lots of duplicates but you can deal with that later.
Anyway that's it for now,I gotta go.