I recently purchased a 2007 Prowler 650 and have been having problems with the carburetor. I recently went on a ride at high altitudes 9-10k feet and the bike started to bog down but once I got back home (7500 ft) it seemed to work fine (sort of). Now it sputters and seems not to have power. I removed the air filter to clean it and noticed that the idle was better without the air filter. I went for a short ride without the air filter and the bike rode well and had good power. I know I can’t continue to do that. Bought a new air filter and still bogs down but without the filter it runs fine. Do I need a carb rebuild or do I have an air intake issue?