10 bikes in LW Am is quite large I would say. There were several occasions last year that LW Am had 1 or 2 bikes. Even in the hayday, 10 was a good size grid. MW is always going to be larger than LW. If you want to save costs and all that, be my guest but don't do it at the expense of the other riders safety and results. http://www.youtube.com/watch?v=iAzWeZ-oZPM&feature=channel&list=UL watch at about 10 min in, Kevin comes up on two vintage bikes at the end of the race and ends up getting passed after having a 1.5 sec. gap.
So you're saying that having the vintage bikes on the track with the LW's caused him to get passed by Ed Key on the last lap?
Sorry, but I don't recognize who you are or how long you've been around, but that's been a pretty standard tactic for Ed for over 30 years! If you started a list of people that he's done that to you'd need a decent sized notebook.
Ed frequently only rides as fast as he has to to conserve energy and his bike. Especially on a day when track conditions weren't the best.
I think you need to attribute that last lap pass to over 100 National Championships worth of experience and not some slower bikes on the track.