Picked up a couple things in Oshkosh, Avery tools sells a little washer holder set. There are many places on the 12 where you need to insert washer (s) to fill a gap, but is too tight to get your fingers down there. I have used super glue and weatherstrip cement on some, but on some that is not even possible. I had seen these, but wanted to touch and feel them first hand, and save postage as well. I will certainly put them to good use. The photo of fittings is not too remarkable, it is thel "fuel Pump Eliminator" fittings. With the Viking kit you get two hi pressure pumps for the fuel injection system, so the lo pressure Rotax supply pump is removed. This not only fills the gap between the fittings, it also serves as a sump drain when you screw the sump valve into the bottom fitting..