Question on Linhof Multi-angle viewfinder

I recently aquired a used multi-angle viewfinder off feebay and have a question. It is the version that goes from 90-360, is black and adjusts by pushing a button on the side and sliding in and out. When I look through the finder the bright frame line is out of focus with or without my glasses. The image in the viewfinder is sharp, but the frame line is very fuzzy. If I take the viewfinder away from my eye 6-8 inches it becomes sharp, but of course I can not see the entire frame. My question is: is this normal for this finder? Is there a way to adjust the focus? Also, is the frame outside the bright frame line at the 90mm setting, 75mm? I like the finder and it fits nicely in the accessory shoe on top of my Wista VX, but the fuzzy line is annoying.

That's the way she looks. The newer model ($1300) has nice, crisp frameline edges.

"the newer model"

We should bear in mind that the current (newer) model was introduced in the early '70s. It is hardly a recent version.