I have been able to find all the negative carriers that I need except the 6X4.5. I bid on them but the prices go way high. This is for the 23C and I have the 35mm and 6x6 and I hate to pay 100 dollars for a new one. I wonder if there are different models of this carrier as some look like an older design. I think the 8048 is the one I am looking for.
Marvin
If you have 6x6 carrier already, do you really need 645 version?
I have an Omega D2. With this enlarger, I can use 6x6 carrier to print 645 negatives. I just place the film at the middle of the opening and print as usual. No additional masks or anything. Negative flatness has never been an issue.
They are so hard to come by for a good price! I finally found one in a camera shop in RI for only $3!!!! I was thrilled. Just keep looking and look at classfied ads here and else where for a lot of darkroom stuff and maybe there is one within a lot you can find.