On 134, IO, it says respectively that Quadvee requires 10 percent of the unit's total mass to conversion equipment, and 10/15 percent of the unit's total mass to either track/wheel.
Then, does it means that you need to devote 10% of mass to the Conversion Equipment AND 10/15% to the either Track/Wheel, resulting either devote total 20% or 25% depend on your choice of Track or Wheel? Else is it only means that the sum of Conversion Equipment and track/wheel is either 10% or 15% of the total mass?