THE VLV IS NOT SUPPOSSED TO CLOSE ALL THE WAY A GAP FROM 1/16 - AS MUCH AS 1/8 INCH WON,T HURT ANYTHING , YOU WILL NEVER FEEL THE ADJUSTMENT DIFF, IT DOESN,T OPEN UNTIL THE ENG SPEED IS UP AROUND 3600 RPM ANYWAY BUT CAN OPEN AS LOW AS 3000RPM AND IS STRICTLY CONTROLLED BY THE ECM, JERRY