I would think Glasgow binoculars will work on them however if they don't there is a German company who specialises in them can't remember the name of the top of my head but if you google Hertal and Reuss you will find it.
Need to send to Germany, company will give you free estimate of repair, if you decide not to have the work done you only pay the return postage.
Down side, repairs have about a ten week turn around.