X-Series with about 5 rides on it.  Black with black rivets.  Just didn't agree with my backside.  In great shape.  A few small marks on the rails from being installed, but otherwise like new.  $100 including Fedex ground shipping in lower 48 states.

Greg
shepherdgreg at yahoo dot com

I am fairly inexperienced at this whole bikepacking thing, but can't you just not loop the forward straps of the frame bag over the top tube and just hook them together underneath the tube instead.  The frame bag should have enough support from the other attachment points and the gas tank can attach as intended.  No cutting or other permanent alterations needed.  I  have a similar problem with my Revelate bags on my bike and that is what I plan to do.  We'll see how it works this weekend....