47-55.1 Arrrggh! *%&#&@! Wiper Arms!

[Livemeyer]

Received my "reproduction" wiper arms yesterday from Brothers Trucks. I opened the box and I immediately noticed the wiper arms were smaller than the ones on my truck. I was able to get the new wipers mounted but when I went to put the new assembly on the truck, it wouldn't fit. These arms are too small and won't slide onto the wiper mounts.

Am I just crazy or does my truck have weird wipers or has anyone else experienced this? Just over a week ago I tried to mount the new wipers on the orginal arms and the screw-in mount just doesn't work with any of these new wipers.