Can we fix it?

Yes, I can. 
John's Triumph was having a bad day, it wouldn't start , and if it did start it only ran for a short time . John is on the left, a nice guy, and a fast rider , but  it's a pity he doesn't know what's going on between his legs. There were  a lot of ideas being put forward ,and a lot of  nonsense spoken. Eventually, it turned out to be a blocked jet in one of the carburettors . The bike looks nice, but it needs an Oilyrag overhaul!