Well got some under the hood time after work after supper on the lake. Timing rechecked....it idles best at 4*, so no change there. All connections checked for torque, nothing loose. With it running I sprayed WD40 on carb base, intake gaskets and vacuum line.....anywhere there could be a leak and there was no change to rpm. Richened the squirt on accel pump but that didn't seem to change the snag either. Plugs were a shade whiter than I thought they should be. This is the same carb the engine has always had and before the rebuild it ran fine. Just with a gasket kit installed and a cleaning.
Any more ideas ?