Yes I'm well aware of the use of the "X-per-vehicle" limitation.
But, more in detail, I want to know if someone tried to make a comp with some Tonnage value (more than 0 kT) and then use a mount on it with Tonnage percent = 0... will it result in a mounted component of 0 Kt tonnage? I will not atempt to make any 0 hitpoints (structure) component. Thanks a lot for the tip SJ!
The mount's tonnage percent is a multiplier.
There is no division involved, so zero is not an issue
Making it a negative size is probably not a good idea, but might also open up a whole new branch of modding. In which case it would be a very good idea.