I have a 1998 Polaris magnum 425 2wd it sat for a few years unran, I replaced the sprocket on it and put a 11 tooth sprocket in its place,and I figured since it sat for so long I should clean the carb,and since I did it hasent ran, right after I cleaned it,it would pop off and run wide open until I shut it off, so I tried adjust it and it made no difference, so I took it back apart again and and now it just wont start,im getting gas to the bowl on the carb,and im getting plenty of spark,but im not getting gas to the intake,when I take the bowl off I can blow through the main jet and the is nothing blocking the passage,every jet is clear enough for me to easaliy blow through,at this point I feel as though im beating my head against a brick wall....... any suggestions????