The 30-30 cal editions have feeding problems more than any other problems.
They can be difficult to get to work properly if they are not feeding the rounds correctly off the carrier. The slim rimmed case just doesn't seem to fit the carrier well and keeps tipping to one side or the other. There's only so much in the way of 'adjustments' you can do.

The 35Remington caliber rifles work much smoother and without nearly the problems. Not near as many were made in 35Rem however.

It's been quite a while since I've seen one that was brought in for work.
Not unusual in this area though, as not until recently have centerfire rifles been made legal for deer.