I have had the same issue from a local vendor. As stated most of the suppliers get them from the same source.
Wouldn't it be great to get parts that work?
I have purchased good ones from Danchuk though.
Fred


1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine