I had a model 60. It worked OK, until after cleaning it a few times. You have to be carefull not to bend the guide pin for the bolt. If you bend this, good luck getting it straight again, and your gun will almost certainly jam! I ordered a few of these from marlin, and this solved my problem. The 60 is not a bad gun, just a little on the delicate side. The tube mag offers the advantage of a lower profile and 15 shot capacity. Accuracy was more than acceptable.
Later I sold the rifle, and got a ruger 10/22T Stainless with the laminated stock. This gun is pretty sweet, but it jams as well. Every .22 I have ever shot has jammed at some time. This seems to be the result of the cartridge, wich is relatively delicate and tends to bend easily.
Arguably not the most well suited cartridge to use in a semi-auto. But with the low price, I can live with a few jams here and there.