ultraculture1978

Im looking for either a fix for none working speedo and/or a good aftermarket replacement. My main issue though is the bike wont tick over, well sometimes it does, the timing seems to be all over the place. Ive tried adjusting what i believe to be the idle mixture screw and have sprayed carb cleaner ibto it but still no dice. Sometimes after a run its fine, other times it has to be revved to fuck to keep it going. Any advice?

Not sure if i have already done this but here goes, im a born again biker, just bought a little xt125r to run around on, apart from the shitty speedo and lack of power its good to be back on two wheels. Im looking to do some green lane riding around Birmingham if anybody else is. Dont be shy!