Dear Rotty,

It is a pity that someone else could not come to your rescue. I shall try to remember and look into it when I next visit my brother and his family, who acquired the PR604 at a really good price due to my contact with a friend and distributor as well as my persuasion to him that it is the preferred model over the other options. Since they have little experience, solving this problem for you will also help them. My brother is a very busy dermatologist and music lover who lives a fair distance away.

Khai