OK I fired up my 32 Caliber and the starboard engine wont idle below 1500 rpm or so. Runs fine above that but as soon as you throttle back and try to idle, it just stalls. Any ideas?

make sure the secondary throttle plate is closing all the way at idle or it will pull to much fuel and die. if thats not it, pull the float bowls and metering blocks and clean everything up.

vacuum line?

Start with the basics. Plugs, cap, rotor, fuel filter.

What carb????? Carter or Q-jet????