Hey Rob, are you running on premix?

At current, my 18 is running on premix and I have the sam problem. If I drive in slow traffic for too long the one plug will die due to fouling. At the moment I'm trying to tame or solve the problem by running the idle mixture a little more lean than stock. This seems to be fixing me problem for now but I am still testing. I've literaly removed the airscrews and their springs and plugged the threaded hole it screws into with a short piece of blanked micro-irrigation pipe. The idea is that the system draws more air at low revs to keep things lean and hot. I've changed the size of the MJ's to 138 and 140 on "freeflow" air filters. The result so far is that I'm not having any fouling problems and the bike is running well with the bigger jets. I'm also showing a slight drop in petrol consumption.

Coming dow hills remember to run on compression only for short intermitent periods as I don't think it'll be a good idea to leave the crankcase un-oiled for longer periods. My mix is 40:1 so I'm sure theres enough oil in there to keep stuff slippy but Im just being safe.

Oh, does anyone have a pick of how the power-jet plumbing looks on a 18 R2J? The one in the tech section shows two solenoids for the PJ's but I only have one (one connector aswell so the other solenoid is definatly not missing somewere).