I got some Hi Flo filters from the dealer when I bought my WR450 04 model, but now they are al used up! They were part number HF142's and had "YZF" written on them in pen. I ordered some mail orde rtthe other day for the WR450, and the ones that arrived are HF141's. They look similar, but are not the same, main diff being they are a paper filter, whereas the 142's had a metal gauze showing on the surface, not paper. BUt then, on closer inspection, they are a very slighty different size (length). Anyone used HF Filters on their WRs? If so are they 141's or 142s? The mail order shop says "they" are right, the dealer says "they" are!!!