Looking for any advice on stenciling those parking curbs (or just regular curb) that have the painted background with the numbers. I have tried taping them all off, which works well, but uses lots of tape and is time consuming. I have tried tilting the gun and spraying them with the machine, but they don't come out as nice, and pavement is rarely perfectly flat to get them all uniform. I have not tried cutting out spray guards, but there's at least 4 or 5 different types of parking curbs, and they will get sloppy pretty quick. Anyone have any words of wisdom to make this task less miserable? I have about 200-250 of the stupid things to do on Friday.