That sure could be it...your posted photo is too small for me to tell for sure, but it makes sense. Our truck had a rear-view mirror mounted on the upper hinge bracket. It was on a telescopic rod assembly, but even at the maximum extension, it was only barely adequate, barely sticking out past the edge of the grain bed. The mirror itself was only 5" and the single arm mount was not exactly steady...to say the least..! But since the roads we traveled over most of the time were nearly deserted, a mirror did not get much use anyway....and most people did not even try to pass a grain truck on those narrow dirt roads.

I have a nice pair of West Coast mirrors that will be mounted on this truck before I take to the streets. It will be a BIG change to actually be able to see who is behind me...[G]

I just added a shot of the truck to my new PhotoBucket account. Have a look and let me know that it's working correctly if you would. Also, how and where to I put in the info that you have at the bottom of your signature line? I tried to do that and got an "invalid format" message... Thanks in advance..!