So you think it's cheaper to buy another back and based on internet experts "think" it's better than what you already own. Also thinking the Polaroid lens (and I've owned more than a few Polaroid lenses and backs) are better than what you own??? Buy a 4x5 and shoot sheet film.
Well, considering this forum and website in general is to spread knowledge of equipment and techniques, from a wide swath of different photographers, yes more than a few here I would call photography experts, if I didn't think their experience was relevant I wouldn't have asked for the input.
Perhaps I failed to make it clear, but the reason I have invested in a Century Graphic, is it's portability, and it's exceptional modularity, in that it will readily accept other film backs, particularly the 6x4.5, which not only provide a different aspect ratio, but also makes shooting more cost effective.
I never said the Polaroid lens was good or bad, I've never shot with it and it's exceedingly difficult to find example shots taken with it, so I do wonder how versatile the 127mm lens will be in actual use.
I have a Linhof Technika, so yeah maybe I will shoot 4x5 one day, but then again, I'd have to invest in more developing equipment which I don't really want to do.
If you want your two cents back, bring your receipt.
It may have been a little rough, but the reality is (which I tried to express earlier in the thread), people raise a lot of hypothetical concerns on the internet about topics like film flatness in rolll film holders, that get amplified through repetition. It would be a good idea for the OP to shoot a roll of film to get used to the camera and see if you actually have any issues attributable to film flatness, or if there are other bugs in your use of a new camera that are important to work out first.
This goes even more so if one is thinking about buying a roll film holder that might not even fit (some of the Horsemans) or if the OP has a lever wind Graflex holder - the lever wind holders are not that much different from an RB67 back anyway.
Every time I click the shutter its important. I don't like wasting anything if I can help it.
You are correct most people learn by doing, which I plan on doing extensively. I also don't want to lose a shot due to inadequate equipment which could have been mitigated prior to shooting.
I have seen some example photos taken with the original knob version which seem alright. It's not particularly useful to judge images uploaded to the Internet. So as I said earlier in this Thread, I would like to compare the lever and the knob version to see if the film flatness is discernible.
Also, I'd like to thank everyone who helped me in this thread, especially Donald Qualls and Dan From and chuckroast, you all have been a great help.
I'll update this thread once I test things out.