On my wifes Compass, we want to use a hitch mounted bike rack but find the receiver is not long enough, I would like to extend the receiver 6" but when checking extensions on line the means of measuring are not specific, one site mentions measuring from pin hole to pin hole, is that how it is done, also not all sites have the same length extensions, some start at 4" some start at 6" sure could use some help here
Thanks
Bob
Thanks
Bob