I know it's not an ultimate wax only issue but thought I'd ask anyway since that's what I've been using. It rained here this morning and the water beaded great on my vehicle. Problem is, when the sun comes out, the water spots start staining and the car looks horrible. I look in the lot and many cars are either not waxed or waxed with something different since the water tends to sheet off them not leaving water spots. Is there anything that can be done to keep the spots from forming or another wax you would recommend that sheets water better than beading with spots staying? Thanks.