I've recently been trying to get in touch with David Knapman at Pro Camera Service, Sweden, as my Hasselblad F 150 f2.8 has stopped stopping down. I get his answer machine, and a nice bilingual message, but the message is cut short and I then get a Swedish voice asking me to tap in my passcode. I get no chance to leave a message. Normally I'd wait a while and try again, but as luck would have it, I need this lens turned round and working again within a few weeks. So. If anyone has used David's services recently and knows that he is not on holiday, or retired, or sick etc, I'd be grateful to know. I have a couple of other options in the UK, but if I would like to least get in touch with Pro Camera Service before I send the lens over the water.