OK, getting bike ready for spring riding season. Put in new gas, checked oil, added coolant, stuck battery on charger for a bit just to be safe, etc. Bike starts up and idles like a champ. However when I start to take off it dies. I figured that was a problem with residue clogging the jets in the carbs, so I added sea foam, drained the fuel from the carbs and let it refill. Still idles wonderfully, but still dies at takeoff. Thoughts?