Hey everyone! I put an IDS2 on my 03 DR650 last fall. When I did I put the 170 DynoJet in it. Then later it was recommended that I put the 160 in instead and it actually ran a lot better. I just recently changed the oil and it smelled like fuel. I checked the spark plugs and they are a little black. Actually wet looking. What would you guys recommend i do? Maybe the 155 or the 150 or is that to lean? Thanks for the help in advance!!