I am a proud owner of a 2003 trailblazer 250 but an having a major issue. Currently it runs but it has only half the power as my 1999 AND it seems at higher altitudes it floods. I have had it served where they gave me a different jet but did not fix the issue. Also when it floods the only way to start it back up is to take the top of the air box off to allow more air flow. I have considered getting a carberator rebuild kit and changing out the floats, but wanted some further insight before spending to much money. Suggestions please! !!