I am considering buying a tire changing ramp (CAMCO) but want to get feedback from others that have tried these. I have a 2017 North Trail 21FBS. I have the wide gap between the axles. Has anyone used these ramps in this configuration? Did it work? From reading the reviews, these do not work on some trailers. The 2nd wheel is not lifted enough to change a tire. Any experiences with this set up is greatly appreciated.