WANTED TO RECURVE MY MINI HEI ORDERED CRANE CAMS RECURVE KIT SUGESTED BY LANGDON , SPRING ADVANCE CURVES DIDNT MATCH THEIR LIST. MY 200$ TIME LIGHT ALLOWED ME TO FIND GOOD COMBINATION OF SPRINGS. HAD TO CUT OFF CORNER OF VACUUM ADVANCE TAB TO MOUNT VACUUM ADVANCE UNIT[no body told us that]. AFTER INITIAL TIME SETTING TRIED TO SET VACUUM ADVANCE COULDNT ADJUST PINGING OUT.ADJUSTABLE VACUUM ADVANCE WOULDNT ADJUST. YOU CANNOT RETURN MODIFIED PARTS SO I USED SPRINGS & THREW AWAY VACUUM CANISTER...USED ORIGINAL HEI CANISTER WITH LIMITER BLOCK.. TOO MUCH TIME AND MONEY SPENT ON TOO LITTLE GAINS,,,DO YOUR SELF FAVOR KEEP ORIGINAL HEI RECURVE AND VACUUM CANISTER
