I have a 01 426 with the dr. d hot start. The nut that holds the plunger/cable in the carb is hollowing out and doesn't make a good seal. At about the same time I noticed this the bike began to be hard to start, would pop a lot and didn't want to idle until warmed up or till I turned the idle way up. Just checked the valves and they are good to a little loose so that shouldn't be the issue. Waiting on the replacement part but till then wondering if the bad seal could be causing the hard start/popping/no idle issue?