I just finished replacing the speed-O-meter, temperature gauge and a new from NAPA TS 6464 temp sending unit on an early 1954 Kaiser special. the temp gauge did not work before replacing them and now the gauge goes to being almost pegged when it is running, but it is not overheating. Speed up the RPM's and it goes past hot until you let it idle then it goes to about 7/8s. Any ideas?