My first post after lurking for five months (as long as I've been playing a uke)! I found a solution for the flake's notorious fret wear--super glue.
I picked up a Schoenhut flake about 3 1/2 months ago, and confirmed that after only a week and half, I started seeing fret wear on the 2nd and 3rd frets of the 'A' string. After some musing, I remembered when I repaired a too-deeply-cut nut slot with the tried and true baking soda/superglue method, how impressed I was with the toughness the resultant composite.
Unstring the uke and mask the fretboard with blue painter's tape like you would for dressing frets (except I left a tiny "air gap" between the tape and the fret bar). The nut had to to be taped off (vertically) as well (make sure the tape doesn't touch the zero fret). Get some tightly rolled Q-tips, and saturate the end of a Q-tip with thin superglue and roll the tip quickly on scrap cardstock to squeeze out excess. Then wipe each fret from left-of-center toward the right past the end, and then do the same thing from right-of-center past the left end. Don't press down hard--you only need to coat the top of the fret bar and you don't want to squeeze/wipe so hard that the masking tape is glued to the fretboard. If you work quickly, one Q-tip can be used to do 3 or 4 frets before the glue gets too thick. Wipe with the stick part of the Q-tip almost parallel with the fretboard and perpendicular to the fret bar.
Let the frets completely dry, and go over them lightly (couple strokes) with 400 grit sandpaper to knock any high points down. Wipe the dust off, and repeat the process 4 or 5 times (the layers are very thin). You can leave the last layer unsanded.
I've been playing my flake regularly for almost 3 months after doing this and don't see appreciable fret wear. The only noticeable difference between an untreated fret bar and the treated one is the latter are somewhat glossy. I also used superglue to (carefully!) fill the wear in the frets and level them off again.
Hope this is helpful to someone.