Sounds like your red was what we sometimes call a "bleeder color" meaning that the primer has a tendancey to bleed through the top coats and therefore require much more paint than would normaly be neccasary. This type of paint is supposed to have a like colored primer under it to help insure a uniform color through the paint job. Your options now depend on several things. Where are the runs? How bad are they? Just how much dirt did you get into the paint? How much shine has the rest of the tractor got on it? Are the dull areas easy to get to in order to buff? And perhaps most important, is this tractor for show or go? Show tractors need shine. Work tractors need protection and where there are runs, you have lots of protection. If this tractor is for show and you want a truly good paint job, let the paint dry about 5-7 days and repaint it. Sand everything you can get to with 220 grit wet or dry paper. Wet sanding is preferable but dry is fine also. Sand everything that you can get to. Use a sanding block also. When repainting this time, use a mid coat adhesion promoter to help glue the paint to the surface. I recommend using a spray can to apply a medium wet coat of adhesion promoter to the areas that were hard to sand in order to help the paint stick better. Mix a little bit of the adhesion promoter into the first cup of paint and spray as usual using hardener and thinner. The next coats do not need the mid coat adhesion promoter. An alternative method would be to mix up a cup of adhesion promoter and spray the entire tractor with a uniform coat. You don't even have to wash out the gun before pouring in your paint for spaying. You can probably do a very good job this next time because you will only need 2 coats of paint. The areas you talk about where the paint pulled back and left a spot is what is called "fish eyes". Is is caused by dirt or oil or even wax on the surface of the paint. Paint will not stick to these substances and therefore pulls away and leaves a "fish eye". Washing the tractor down with strong soap and water after sanding is the best way to remove all contaminants. Wet sanding with a few drops of detergent in the water bucket helps very much also. DO NOT USE FISH EYE ELIMINATOR. It will stay in your gun and you will have to use it from now on even though you may paint a prefectly clean surface the next time. That stuff just hangs around in you gun waiting to cause problems later. DON'T GET IN A HURRY AND TRY TO MAKE THE PAINT SHINE ON THE FIRST COAT. This is where we beginners mess up the most. After the first coat, wait about 1/2 to 1 hour and spray the next coat a little heavier and this will make it shine. I promise. Been there, done that, got the tears to prove it.
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