I have my apart while I wait for the alternator to do the conversion. I just took off the timing covers and the old belts look good no sign of wear,cracks or any damage. Still replace them or leave them? They are also thinker then the replacement gates belts I got. I dont know when they were replaced last? The PO I got the bike from lied about a few other things so he could have lied about the belts being replaced last summer?