I have a 550k and i only have one big half circler shaped filter in mine.
if you look at this diagram (attached), you see what I'm talking about. it's the square foam that goes at the bottom and supposed to filter the breather tube at the bottom I believe. but alas! it's a moot point because although the 5 microfiches I normally use were out of stock of the foam element and the gasket seal, I googled the OE part #'s (who woulda thought??
) and the parts turned up at Ron Ayers, where I've bought stuff before (my year/model actually showed out of stock for those parts, but those same part #'s were in stock in other years...not sure how that works
).
sometimes you gotta just google the part number and see what happens (don't bother googling Bike Bandit's proprietary part numbers btw).
oh and TT, xsmooth69x found the retainer spring piece at that junk jungle in Minnesota and is sending to me. but it looks fairly easy to create on your own anyway.
thanks y'all