I had a problem with stalling at stops when I searched the problem I found the gas linkage was slightly bent causing idle on high speed circuit. Bent linkage so throttle closed and engine idled on idle circuit solved problem.
I had three different ones with three different manufacturers Germany, mexico, and U.S they all sounded dry when I spun them.I was concerned so I packed grease in from any lip and joint I could find, took a while but worked excellent.