This is what I used:
http://www.mcmaster.com/#8507k11/=xhbe2b
I did have to trim the wing gap cover a bit more to fit these, but it's simple to do, using the fuse side skin as a template. I'm just pinching the lower piece of the molding between the gap cover and the attach angle, but it doesn't look out of place. The trim is pretty small and thin. I've got it running in a continuous piece from underneath the upper gear fairings, around the front of the wing, and back to the aft edge of the upper wing skins, just in front of the flaps.
I agree that none is needed, but I personally felt it looks a bit cleaner with a nice finished joint.