Boh, my skimmer was quite ****** if i wanted to change from skimming more wet/dry, so...3d printed, a stl for a vise and 30minute of tweaking the file and i've got a fine tune for my nano skimmer. Is easily adaptable to any skimmer, if someone wants files just ask, can also eventually adapt it for you if you don't know how to use a 3d software. For free, obviously. p.s. color and print quality was just for testing, will be all white and much nicer.