I had the problem and keeping your gun clean and proper lubrication is two different things, I just spray some type of lubricant into the place where the rod goes into the stock manually cycle it a few times and I havent had a jam since.
I do this about once every month in a half
I have a sbe2 left hand 12 gauge and I love it but i want a 20 gauge and I want an automatic.
Im willing to put up the money again to buy another benelli but, Please Benelli make a left hand 20 gauge!!!