I can’t find this answered when I search. Mine is a 2003 Heritage Classic. I’ve borrowed a buddy’s rear belt tension tool (HD # 40006-85) in the past. Today I got my own and was surprised to find the instructions with it show checking the tension on the lower strand of the belt. My service manual says to use the top strand. I’m guessing that either way is fine so long as the bike is in neutral with equal tension of the top and bottom strands. I’ll follow my service manual instead of the instructions that came with the tool. Just curious…any reason top or bottom strand is better to use?