So i recently did the air box mod to my 01 F4i. Seemed to help for a while and now the bike is running like ****. Yesterday went out riding and while trying to slow the bike down to idle it is loading up. Also during highway stand-ups it is doing the same thing in the midrange. I replaced the spark plugs (holy **** almost $80 for 4 damn plugs!) and that seemed to help for a little bit but then after riding for 20 min today it started to do it again. The old plugs seemed to have a coating of oil on them??? If neone has had this problem or knows what it could be let me know. Thanks in advance.