My xlt is spitting gas back into the air box and is seriously bogging out i have adjusted the choke and leaned it out a little but it doesnt seem to be helping dont know where to go from here any ideas on how to fix this will be appreciated.

any ideas??

How much fuel is backing up into the box? A little is not uncommon, but if it's excessive then perhaps you have a problem with your reeds, or the float levels are too high in the carbs.