To anyone who has a UK SM. Fitted my new FCR last week and had fueling issues low down. I took someones advice and put a 40 pilot jet in. A great improvement , though still a bit rich very low down the revs with fuel screw at 2 turns. Gonna try fuel screw at 1 and a 1/2 turns. If it don't get any better by 1 turn out, I'm gonna try the 38 pilot I got. I'll let you all know how it goes.