Gary and Others,
I checked out all feedback I received from you Guys. I dissected my carb once again. I put a shim under the needle. The spring was there and correctly installed. I also opened up the Pilot jet 3-4 thousandths of an inch. I did not change the Main jet. Setting the Pilot screw (Idle Mixture Screw) at 2.5 turns. Also replaced the diaphragm (Coasting Enricher) parts but I think they were ok to begin with. In summary the only change from original is the Needle shim, Pilot Jet and Pilot Screw setting. The carb is ready to test. Uni filter will be installed before I test.
The only open question is: Is the intake boot sealed?
As for the "hung idle", I think the hung idle is caused by the coasting enrichment and by design. My conclusion from reading other posts.
I should know pretty soon what the outcome is. Thanks to all.