Possible error in factory service manual

[midnightventure]

3 1/2 years ago I tried to adjust my valves. I had done it on several bikes that had screw and locknut adjusters. Trying to go by the book wasn't working out so I put it back together and took it to the Yamaha dealer. When I talked to the mechanic he wasn't interested in helping me figure out what I was doing wrong. Now here it is 3 1/2 years later and I just had it checked by an independent. I told him about my attempt and that it still bothered me. He did it for half the price and explained what he thought wasn't working for me. Like the carb synch in the factoty manual he believes the factory service manual isn't right. He said he had to rotate the engine a little past TDC to obtain good measurements. He rotated it to where the lobes where straight up instead of pointing away from each other. In the position that the book called for the measurements that I was getting 3 1/2 years ago weren't making sense. 3 1/2 years ago (32,000) miles the Yamaha tech changed one shim. Today (65,000 miles) everything was in spec.

????????

[bar836]

that seems to be a recurring theme for Yamaha. Have both a Roadstar and an RSV and both manuals have several issues.