I bought a Marlin 60 (.22) about three weeks ago, to plink with the scouts.
I cleaned it, and bent the recoil spring in the process. If you have ever dissembled one of these, you will know that it is pretty easy to do.
I took it out, and it jammed several times. I called them up, and they are sending me a new recoil spring. Which is nice. Good company.