Yeah,
You think they would have a PDF version on their website or something. Most every other piece of hardware has one, the UA-5 is one of the few that is missing (from the manual forum links). I searched high and low everywhere on the internet and couldn't find anything either.
So I emailed them and asked about it and they do indeed have a PDF version of it, but it is not posted on their website for whatever reason....they have it up on a FTP server for which they told me the address/username/password and I logged in and downloaded it no problem. It is just under 1.5 MB in size. I can email it to you as an attachment if your Yahoo email can accept that size of a file?