I wonder if this
Stainless Steel Extra Long Straight Drip Tip would work. It's about 1.25 inches or 3.2cm out of the atty
I can pop it in later today and see how it works, but I can't see why it wouldn't. It's OOS atm, but I picked 1 up and wondered how good it would work in a UFS with a shorter atty.
After looking at it against the UFS, it should work well with the extension window on it just fine w/o an atty extender.