try something like glue remover. i had tree sap on mine for a while and nothing worked till i tried that. carefull tho it may fade your paint a little and you might have to buf it afterwards.

 

sounds like tree sap spots. i worked in a detail shop for 5 years... we used a greased lightning on tree sap and anything sticky... tar, ect. use the grease lightning first. then use a clay bar , get a spray bottle fill it with water or some of the spray on wax (this is all after the greased lightning) make sure when you use the clay bar u keep the area you are working on nice an wet. i guarentee it will work.. if you'd like some better directions pm me. hope this works for you

 

Holy old post batman! Do you really think, that after 4 years, they are going to come back and read this post?