Does anyone know what the difference is in height for the Thule verses the factory? I have the factory (needed for winter, when no fit kit was available). I do like the factory ones, but wish they say about 1-2" lower. I have an old set of Thule Aero bars (+ feet/locks) and I'm wondering if it is worth it to put them on. The factory ones are a bit high for a few garages. OTOH $150 for a fit kit seems ridiculous, and not sure it is worth it to gain an inch. the factory ones come off really really easy.