i have a neighbor that has one of those dark red cherry trees, it hangs over where i park and it seems to be depositing crap on my windshield, its making the glass look hazy or pitted almost like its been sandblasted but its not IN the glass but on top. its also all over the paint. I've tried some of that tar and sap remover but to no avail. Any suggestions on getting this stuff off? Or do i need to have it professionally done. This might not be the right place to post it but i do have a 80.