If you have the swing-out style unloader, the company is limited to the length the unloader can be due to a height restriction when swinging it out. I'm not 100% positive, but I believe the ASAE has a set limit as to a peak height the unloader can go - a longer unloader would exceed this limit. You can extend it and exceed that limit, but the manufacturer has to heed this limitation. I think I was told this at a Gleaner combine clinic several years ago. I guess it's one of those trade-offs for having a very simple unloader design that requires very little power to operate and is easily servicable. Perhaps someone more knowledgable on the subject can elaborate on this.... And I agree with you on the header raise_lower rate adjustment in the cab!!! Tom langan