One of the rubber grommets on my windshield needs to be replaced. KYMCO sent me new grommets. The grommet will go in the hole but I cannot get the brass insert into the rubber grommet. The two holes on the top of the windshield are smaller but the rubber washers are all the same size. If I put the brass insert into the grommet first then try to insert the whole thing into the hole of the windshield pushing the edges a little at a time, it doesn't work. Tried soap as a lubricant, didn't work. Any suggestions would be appreciated.