Bring a laser level with you and shoot a beam across the front of it. Alternately, a pair of angle finders on the hubs, with the wheels pointed dead ahead may tell the story IF there are not eccentric alignment cams in place.
Hi BoxterRocks. I saw in another thread you may have a Baja Grocery Getter kit for sale. I was unable to send you a PM, it says you don't have that enabled or something along those line. Anyway, send me a PM if you have a BGG you're interested in selling. Thanks