So I bought an Omega D2 enlarger for making 8x10 prints out of my 4x5 negatives at home. I have had two unsolved issues with it that make me question whether it is really suitable for 4x5 printing.
Lens length: Originally I had a ~130mm lens on it, but that meant that the edges of my prints were not in focus. So I bought a 180mm lens. However, because the bellows only extend so far, in order to focus the 180mm lens I have to raise the head so high that I crop out a lot of the image. I could have done this with the 130mm lens to crop out the parts that were not in focus, so this is not an improvement.
Head circle radius: The bottom of the head has a circle that does not quite allow for a 4x5 negative, meaning the corners of my 4x5s are cut off. I can adjust it so that the loss is fairly small, but I still have to crop a bit of my image to compensate for enlarger vignetting.
Is my setup still incorrect? Are these problems solvable? Or is the D2's ability to print 4x5 negatives exaggerated?