I may be over thinking this but curious as to whether the E2 hitch should be adjusted using the front wheel measurement of the tow vehicle with the hitch head mounted to the receiver or without. With my Highlander there is a difference at the front wheel of approximately 1/2 inch. Hitch is currently adjusted to balance out the front wheel measurement with the hitch head in the receiver. If I were to use the front wheel measurement without the hitch head mounted to the receiver, I would need slightly more distribution correction. Any thoughts most welcome!