You can dial the patten knob to a fine point and then dial the air pressure down and dial the material down some , and then get the gun close and just lightly blow the material in the holes , But I have found when edging parts , it will get into the holes on its own , wont be alot of material , but over spray will get into the holes .

Let me know how you like the gun when you use it .
Are you buying your products from a PPG jobber ?
If so ask for P-Sheets on the products you are buying , it will have all the info you will need , like mix ratios, Gun air pressure settings , clean up , dry times , Compatible materials , ect ......
Always ask for these P-sheets on the products you buy , as they have a wealth of info .

SprayTech