Thats probably due to the blade ejector and I think it will smooth out over time. I can get mine to do that as well, but i have to put upward pressure on the bolt. It has not been an issue in practice. The blade on the montana sticks out a bit further than on my model 70. Its kinda hard to compare the two actions smoothness, seeing as the pre 64 57 years old and has been cycled countless times. I do like the ejector on the model 70's better though.
