Ok, I accept it is no longer grandfathered into the F16 class, but it is only just "too big" by a tiny amount. Given that its weight results in a slower rating, there is no theoretical advantage - so I wonder why has it been excluded. Is there anything related to the 1-up usage I have overlooked, or is simply the measurements being even a little too big, regardless of rating?

If I lost the use of the Shadow, I would be very tempted to sail the Spitfire 1-up!