I purchased a Kawasaki Brush Guard for my Mule and cant seem to make it fit. The upper brackets will not slide in enough to meet up with the hole to put the bolts thru (about 1/2 inch short). I had removed the scored area in the grill as shown in the instructions, so that is not it. It seems like I might have to score out the upper most section of the grill to make it fit but all i see or read this should not be? Anyone else had a problem with installing one?