Hello. This is my first experience with a Quadrajet. I have a 1980 Chev 454 truck carb # 17080212 on top of my Buick Nailhead 401 engine. I picked it up at a yard sale and have no previous knowledge of it. The engine runs fine, albeit a little rough on idle, but it consumes far too much fuel for my liking. Before I take it off and dismantle, does anyone know what the stock jet / metering rod sizes this carb should have ? I then have to try and figure out what sizes I need to order to make it run a bit leaner.