What was found
AFTER TAKEOFF, ACFT FAILED TO PRESSURIZE, F/A IN AFT CALLED AND SAID AFT DOOR R2 CLOSED, HANDLE SET CLOSED BUT HE COULD SEE A SPACE BETWEEN DOOR AND ACFT. RETURNED TO DEPARTURE. NO DOOR LIGHT ON OVERHEAD. FOUND FWD EDGE OF R2 DOOR NOT FAIRED. CLOSED DOOR PROPERLY AND FOUND DOOR FAIRED. LUBRICATED DOOR GUIDE ARM AND TIGHTENED ALL HARDWARE. DOOR OPERATES NORMAL. DOOR LIGHT OPERATES NORMAL AND FWD EDGE OF DOOR ALWAYS GRABS THE CATCH AND CLOSES NORMAL.