I changed the pads on my SRAM Level TL brakes and in the process the piston on the front caliper came out slightly - a few drops of brake fluid dripped. I managed to push it back with a tyre lever, cleaned the caliper with a soft cloth, put in the new pads and the brakes appear fine. Test driven it and no softness or lack of braking power. Should I be careful and have both brakes bleeded by my LBS?