What was found
FA REPORTS L1 DOOR IS VERY HARD TO LATCH CLOSED. GROUNDED - YES. FOUND FWD UPPER ROLLER ARM NOT SEATING CORRECTLY IN LATCH ASSY. FOUND HORIZONTAL CONTROL ROD OUT OF ADJUSTMENT. REMOVED LINER & SLIDE, ADJUSTED HORIZONTAL CONTROL ROD REF B737-800 AMM 52-11-00-820-801 STEP 2.K. REINSTALLED LINER & SLIDE REF AMM 25-66-01-400-803. ACCOMPLISHED FORWARD ENTRY DOOR TEST & TESTED GOOD. REF AMM 52-11-00-700-804.