My windshield washer fluid is only spraying out of the rear and not the front. It doesn't matter which one I try and use, it sprays out on the rear window only. To my knowledge this just started happening, as it worked properly several months ago. I haven't tried to clean out the plumbing yet because I really don't think that is the problem, should I just go ahead and clean out the tube first to rule that out, or is there something else that would more likely be the culprit? Like I said, I really don't think it's a clog and I hate to waste my time doing something when there's a more likely reason for this issue.