Here is my cam story. I was replacing some valve shims on my WR426 and while looking at the cam gear and timing chain, before taking them out to replace the shims, I noticed that the punch marks did not match up with the casing with the piston at TDC. I looked at the looked at the book that came with the bike and it showed that "E" and the "I" punch marks both lined up with the casing. So I moved the exhaust cam to match the pic shown in the book. Well I am not liking the way the bike is riding now and am not sure which cam gear I need to turn which way to get it back to the way I had it. My current timing looks like this. A couple questions. #1 Did I have the WR or YZ timing to start off with? "E" punch mark off set when "I" punch mark was even with casing. #2 What timing do I have now? Both "E" and "I" punch marks even with casing...... as per owners book. #3 Which way do I need to move it to get it back? #4 Does anyone have any pictures of both the YZ and WR timing. I have looked through and searched the forum and have found a few pics but not exactly what I am looking for. As always Thanks!