Hi redeyeart,
Thanks for helping to bring this issue to our attention. The behavior you have described is occurring due to a known issue with our system that affects some Power Sports categories within eBay Motors. This issue is expected to be resolved as part of our next major site update, which should take place around 2/16/09.
If you want to get these listings posted in the interim, I recommend posting them through eBay's "Sell your Item" form (as much as I dislike having to make that suggestion).
If you would like to use Auctiva's image hosting and design tools when doing so, just go to your Auctiva "Saved Listings" page and click the <HTML> icon next to the item, then copy the HTML code that appears in the pop-up window. When creating your listing through eBay, if you click the "HTML" tab on the editor and past in the copied Auctiva HTML, the listing will look just like the one you designed in Auctiva.
If you have any additional questions or concerns, please feel free to contact our customer support team using the web form on the following page of our site:
http://www.auctiva.com/help/requesthelp.aspx-Mike