ok after an hour of battleing with the parts guy he insisted that all the balancers are the same...not the idot. ..I need to get another one that is set to time at '0" when its at two oclock. My spare that I have installed and the old one time "0" between "11" and "12"". anyway the good news is the new t-chain is in and not much tighter than the old one. I purchased and set of custome wire's assembled them and installed the ( hate long hanging wire's). Thanks for the replyies to this post on the timeing chain marks. would not beleive that as desent as this thing ran , I was dumfounded to find it 180 out! . now on to the next problem fuel in the secondary.