after owning n riding jap motocrossers 4ever, the berg was my first 4stroke enduro machine. . . every thing about the berg impressed me, the handling, power, light wieght, build quality, i thought was tip top!. . . BUT. . i cannot for life of me get her to fire up cold,. . . i have been through the electrical circuit & repaired or replaced anything according to specs. . set tappets, carby kit. . . its all spot on!. . . is this normal? . . has anyone a cure?