Indeed, tom chow.
Ola, it is time to move on no matter what this issue turns out to be, and short of having an independent inspection made by a qualified/experienced technician with a good reputation, then you will never know for sure what the issue is/was.
There are plenty of other Hasselblad Zeiss Distagon f/4 40mm lenses out there. (By the way, I have this lens - a CF T* FLE version from 1996, and it is simply wonderful - the only pity being the filter size - that it is an uncommon size - but then again, I am not into filters).
I always buy my gear from reputable sellers, the larger the organization or the more sales from an individual, the better.
Never from an individual as a one-off bargain! The online sellers (the major camera stores, and eBay sellers with 100's of
sales behind them) provide reports on the condition, especially in the case of lenses whether haze, dust, cracks,
scratches, or fungus are present. This information is irrefutable, so my experience has been tat they have no reason to
misrepresent things. Also, before I will purchase, I must satisfy myself that they have a well defined return policy in the
event of finding a discrepancy between the description of the item and the reality.
If I saw a problem of the magnitude as displayed by this lens, I would have absolutely no interest in it. An expensive
ecosystem like the Hasselblad V system, where excellence, reliability, and quality are has no place for mixing a quality
body, back, and viewfinder with a substandard lens - all components must be in good order to make the photographic
expereince worthwhile.
A cautionary experience for all of us, Ola. Thank-you for sharing it with us.