hey people im still having trouble sorted it to idel corrdtly by adjusting fuel mixture and idle screw it idles fine but as son as you drive andstop at the lights say it just falls down the revs and cuts out and i have to restart it and its really rough when i do like splutering out the exhaust, i wa told might be diaphragm any1 know if it is and how much to fix it cos im gettting ery pisse doff might just go back to the pierburg????