Maintenance time

Anybody in or near Philly good with carbs??? seems that I'm getting a pretty good fuel leak. I'm pretty sure it's the petcock because it only happens when I turn it to off and dont bother her for a few days but I noticed one of my carbs seems to b leaking as well so I figured I might as well tear them all apart n give them a good cleaning and replace the gaskets when I do the petcock. only problem is I've never done it before so it would b awesome if someone was willing to walk me through it. I love wrenching so I'd like to b involved but if one of u guys has a shop or does this type stuff for a decent price we can talk about that too.