we all make bonehead moves...here was mine today. I had the carb apart and was looking for the brass plug to access the idle screw...thought I saw it on the side (other bike carb has an adjustment on the side) so I was figuring this was it. I drille ditout...no dice..just a hole that leads somewhere in the carb. Found another brass plug that fits very tightly, but is not as robust as the factory one. The harley dealer was clueless since it does not come up on the parts list...it is roughly 9mm in diameter. Any idea where I can source a spare in case this one gets blown out? It is the brass plug that is facing the back of the bike when the carb is installed. Ended up drilling out the correct one on the bottom.