...now
that he's on the internet, I'm sure that it's easy to deal with him...once
went up to his shop in person and it was like rendezvousing with a secret
agent...but his stock is extensive.
Reason I thought of him was that i
searched for Carlwen carriers but they seem ot have gone out of
business...they would make you anything for a price (think $$$$$).
Otherwise, stalk ebay for a 6Xwhatever used carrier and file it out to
6X12. I've had to do the same thing to a regular 35mm carier for a 24X58
panoramic camera...having a Dremel helps, having connections to a machine shop
REALLY helps. The carriers are aluminum so they're easy to carve
up.