Do the K-jets have the little coil related box on the ECU heatshield (I know they don't have an ECU but the carb models still have the heatshield with a little box and a wiring plug on them.) Its common for this to cause no spark on the carb models. If yours has this then I have a few working spare ones. If its stinking of fuel then I hope for your sake its got no spark, then it could only be a few things, like plugs, leads, dizzy, coil etc, all fairly cheap items.