So here's what prompted the subtile frame modification. There is a small difference between Spaceliner and Flightliner frames that is not really noticeable at a glance but does have an effect on mounting a TRM tank. The top tubes on a Flightliner are sort of an 'S' shape where the Spaceliner is more of a 'J' which causes the tank to line up farther forward. Because of this, the top of the springer is closer to the light pods on the tank. This wouldn't be an issue if the fork is left stock, but by flipping the rockers there are no stops for the upward travel which could conceivably allow the spring plate hit the tank. Knowing that this bike will never be stock again, I decided to adjust the top tubes to accommodate my needs. It actually doesn't look bad, but it will be hidden by the tank. Here's the before and after comparison. (I'm sure there are 6 or more differences in the photos but the top tubes tell the story.) The Hostas have really been growing!