Filament Dust Filter with Colorizer

Update 2: made the walls of the stem that inserts into the filament guide hole thicker, the old one broke. for some reason though the main section fills in solid but the lower half doesn't. maybe it has to do with maya (recently upgraded from maya 09 to maya 2014). currently i'm using the old top half and the new lower section and its working out nicely, but i still have to figure out just why the slicer decided to fill in the upper half of the colorizer.

Update: After fighting with the model