I am thinking about buying a used Lawnboy Silver Series mower. I saw it in the want-ads in another city so I haven't seen it yet. I have never owned one so I have questions. I called the owner and he said it was a mulching mower with a side discharge. Can I put a regular blade on it to become a standard mower? Also, I understand it uses the same gas that goes in a weedeater. I need something to mow hills that I don't have to worry about the oil not lubricating the engine when on an incline.