I've had several Savage/Stevens model 94 single barrel shotguns in the shop. Customers had taken apart the ejector system and lost the parts. Twice, I ordered replacement parts 147740B (ejector spring) and 147750B (ejector pin) and received parts that don't fit. the spring is supposed to slide down around the shaft of the pin, but they simply don't fit together. I had to turn the pins down in the lathe before they would fit inside the springs. Is this normal?