Wow that's odd A_Pilot,

Mine sputters as well. And carburators scare the crap out of me. My brother who knows bikes (not the one that broke mine) told me as long as it runs just leave it alone so I will do that for now. Mine does not stall like yours does but it does sputter. Its more of a spit sound or pop sound coming from the carb. Wish I knew. The exhasust sputtering on downshifting and deceleration is normal I have read but not sure about the sputtering. When it does this I can feel my whole bike jump a bit. It's almost like there was an air bubble in the fuel line. Starting to wonder if it may be a gas cap issue. That's one thing I am glad I dont have like others, a leaky gas tank. But then again, only had the bike a month or so.

If you havent already, read the whole thread. Lots of info here. Many here have swapped out jets on the carb because by default this bike is set up to run lean. Im guessing that causes 90% of the problems here. I have yet to get my bike up to 50mph so I cant say if it stalls at that speed yet. I am still breaking it in. Fastet Ive run it was 40mph.

And yes the shift rod issue seems to be common. Not even sure I want to ride my bike again until I get a spare but I did get my original one repaired so that will get her back home where she belongs. Hope mine doest take two months to get here. Took a month to get my bike. Now you have me worried.

Here is a pic of the repair work they did on mine. I still need to get some spare nuts to brace it more.
Fort Hood-20120530-00015.jpg

BTW I do remember reading something on the killermotorsports web page about stalling out. It was on one of their maintenance sections. Maybe you could look there or just do a google search. I hope you figure it out because that would help me and a lot of other newbs out as well.

I hope you figure it out. I will be watching your post and as always I follow this thread like a hawk at least once a day. It's a gold mine for DF owners.