13.3 is low, but it might be the battery is still low. Charge it up if you can or run it awhile and recheck. With battery "up and normal" AND ENGINE WARM (the VR is temp compensated) battery should run 13.8--14.2 +/- a couple of points
ok , i will do that , something i forgot . before replacing the alternator i disconnected , cleaned up and reconnected the battery ground where it goes through the front by the radiator . also , i removed the ballast resistor on the firewall , cleaned that up and reinstalled . both of these did not change what the gauge was doing ( staying at slight discharge ) . but is there any concern there ? would it do what its doing if the ballast isn't grounded to the firewall correctly ?
sorry if i am not making sense , its been a long day in the heat and i didn't stop to eat yet .
thanks for everything , i am gonna take it out for a drive .