Q: I was wondering if you had any hints on how to keep the seat bag further from the saddle? While riding it constantly rubs my legs.. I didn’t know if this was normal or a miss install.

A.) the Medium Saddle Bag, it works best with saddles that have bag
loops on back, which moves the entire bag back on the saddle. It also works
much better with a neutral or slightly forward saddle position on the
seatpost – the more setback on your saddle, the closer the bag is to the
back of your legs. Trying to use it on a narrow saddle pushed way back on
the seatpost (like many modern road/racing bikes) will almost certainly
cause interference.

There are various hacks around for saddle bags like this (all barrel-shape
saddle bags have the same issue, including those from Rivendell and
Carradice), including using a small wood block between the seatpost and bag, or relying on a Bagman(tm) support or the equivalent ViVa support from
Velo-Orange. For saddles without bag loops you can try the ViVa saddle loops from Velo Orange.

Peter White Cycles has a pretty good description of the whole thing.

** http://www.peterwhitecycles.com/saddlebag_support.asp