You are correct to point out how horrible those Simplex DT shifters were. Another thing we learned fast was Suntour derailleurs required a lot of cable pull. So if we were upgrading a rear derailleur for a bike with Euro levers we always went with a Shimano unit. This was really critical with bikes with ''Stem Shifters'' (wonder how many times those have been mentioned on CR?) which were limited to about 90o of movement
BOB FREITAS
talking about stem shifters in MILL
VALLEY, CA USA