I'm with Dennis, I would check the fuel line nipple I've had few that have this odd lean condition because of there ended up being a small sliver of plastic that got pushed in behind the nipple when they screwed the nipple in to the tank. Fuel still flowed through the fuel line everything looked normal, but it realy wasn't there wasn't enough fuel moving fast enough through the line. Another thing could possibly be that it's running way to rich still and it's not actually bogging out from being lean it's bogging out from too much fuel, you said ti wasn't over heating so what is the temp near?