07 450 ...east coast sea level...stock other than a drd full system and twin ai air filter... Bought it used it had a fmf jet kit installed when I got it ... Ran ok but not as well as I thought it should ... So after looking through the jetting database on here .. decided to take out the Kit ... See if the o ring mod wAs done or srping... And reinstall a oem 170 main .. 48 piolot.... stock needle in the 4th spot...while I had the carb off I went to get the merge spring but they were out and only had the r&d bowl/kit that came with one ... Got a good deal so I installed that too... Now I set the adjustable leak per the paper that came with it to match the stock leak jet ... Only I took it for I ride... And it ran ok but it stalled near idle while turning .... And doesn't want to idle... It will idle for a second or 2 then die like you hit the kill button... If you try to give it gas normally it dies right away.... But it as soon as you start it you get it past idle it will stay running.... I've checked for air leaks... None.., messed with the fuel screw... Nothing... Could it be the leak adjustment?... I'm new to these carbs I'm a 2 stroke guy ..... Don't realy know where to start with all these extra circuits not on 2strokes... Thanks in advance !