My Yamabog kept getting worse and worse. So, I said it's time to do the BK mod. Got the carb off the bike, cleaned it up, made sure everything is up to spec, and I can't get the accelerator pump to squirt. It squirts when the float bowl is off the carb thru the port, perfectly. The diaphragm looks good, but when I use carb cleaner and try to spray thru the corresponding hole, it doesn't work. It seems blocked. Is there any way to clean that out? Or am I missing something? Should I be able to get the accelerator pump to work on the bench?