Hi all can any one shed light on this, my 08 rev 3 250. Previous owner had it set up like thus Ignition timing was fairly retarded by 5 degrees I'd guess Needle jet is a JJJ not the JJH standard size. Front sprocket is a 10 tooth Found the time due to the bottom end going and having a rebuild. I can only guess they wanted a very soft engine. On second note my m8 has a 2001 modle which seems to have more grunt and power than mine on a speed test he pulls way and leaves a fair gap even if we