Muckybill,
If I may suggest, spend the few dollars/pounds now and pick up a good quality stainless screen type filter from SCOTTS. The price is about 60-70USD but over a years worth of riding it will pay for itself. The oil change regiment of the Husaberg is something you should not neglect and will be the single MOST IMPORTANT maintence routine if you want your Berg to last. With that being said, the stainless filter will keep particles as small as 5-10um (micron) from passing and can be used over again and again. The quality is A1 and worth every penny. Run the Delo400 15W-40 from Cheveron and changing the oil every ride is cheap insurance to ensure peace of mind. Do this and check your valve clearances regularly (every 10-15hrs or so) and your Berg will run like a top!!! Just my $.02!!!
Regards,