My initial reaction is it is running lean. Whether from a vacuum leak or not I can't say from here. Have you tried any of the tricks to check for a vacuum leak yet?bozkm said:If I put my hand over the carb, it runs fine, nice and smooth..take the hand away, it starts to "no want to run" even at 1500 rpms.
If its a spacer that looks like it goes below the carb, then no, it is not "needed". But I would use it since it helps isolate the carb from the heat of the intake/exhaust manifold and may help low end torque some.bozkm said:For the spacer, yes they sent me about a 1/4 inch black plastic spacer..is this not needed??