Ken was out of town, driving down to GA to pick up the Doran, but he came back yesterday, and returned the trailer. He reports that at his height, he just about fits in the Doran, easier with the T-Tops removed. He'll work on lowering the seat, or finding a seat that mounts earlier. I'll email him about the manual you found. Thanks.
BTW, I used to have a bookmark at:
http://search.ebay.com/ebaymotors/_W0QQtZvbQQsofindtypeZ4 which is a link you can enter an eBay auction number, and go right to it. That link was one I used often enough to have it as bookmark in my toolbar. But several months ago, eBay added a new (relatively) unannounced feature that you can take that item number, and simply put it in a search bar.
To make this simple:
there is another manual under ebay motors electric cars page 11
it's a doran never opened item #300544779107-----hope this works
1) copy just the number from the message, in this case, just copy
3005447791072) go to any eBay page that has a search box, and paste the
300544779107 into the search box, and hit the return key.
Now, it could not be much simpler.