Won't start after valve adjustment *UPDATED*

[SonsaFrantic]

Well the bike has 48000 miles on it. My dad didn't do much work on it. So it wasn't running really well.

[The Buddha]

Running on the right only till 4500 rpm = loose or disconnected vacuum line or missing O ring under the top cap.
Cleaning - not required, its running implies the slow circuits are OK ...
Cool.
Buddha.

[noiseguy]

Running on the right only till 4500 rpm = loose or disconnected vacuum line or missing O ring under the top cap.
Cleaning - not required, its running implies the slow circuits are OK ...
Cool.
Buddha.

Isn't the slow circuit pretty much out of the picture above 4500 RPM? I've had bikes with blocked idle circuits that run great at WOT, but won't idle. Carb clean fixes these. Is that not the case on these Mikunis?

I was thinking it's more likely that he knocked a vacuum line loose in the valve service just b/c if the carbs were fine before, they should be fine now.