I've got a 2013 sportsman 500 and Ive changed the break in oil already on it. I didn't take off the oil screen fitting when I changed it. How important is it to do this next time I change the oil? Will I do any harm by not changing it? I mean isn't that what the filter is for? I'm not trying to be lazy it just seems like a PITA and I'd like to avoid it if it won't harm anything. Thanks.