We went to blue beacon in Weatherford Texas for the last time! The last two times they really did a terrible job. We complained the last time that the time before that the guys did a terrible job rinsing the RV and it was very streaky. This last time was worse than the time before! We brought it home and washed it ourselves and the body looks better but the windows are terrible!! I don’t know what they used but we can’t get it off! We tried two different glass cleaners and even straight vinegar but it won’t come off. Does anyone else have any ideas? I and only assume it’s their wax. We don’t like bringing this 40’ fifth wheel into our subdivision with these narrow streets so we always stop at blue beacon. Never again! What do you clean your windows with?