found a kappa 12d vq review from caraudiomag. the following are the dimensions of the insert.
LoQ: Length = 2.875", Pole Vent Diameter = 1.0''
MidQ: Length = 1.875'', Pole Vent Diameter = 1.125''
Hence, I will have to send the LoQ insert to a machine shop to have it cut and increase the vent...