One more question: Is it normal for the winding action with the hand crank to feel like I'm breaking something? After 3 quarters of a turn there is a CRACK sound and some resistance and then no resistance at all for the rest of the action. With the Hasselblad the movement is smooth throughout, with constant resistance.
Yes - that is normal. What happens is, at about that many turns, the part that film attaches (by tape) to the backing paper rolls over the edge, hence the resistance and the sound. Once that's over the roller, it's smooth as you say.