We own Omega Universal 4x5 Variable Condensor Enlargers. It seems that ALL the newer models have "split" focusing when printing bigger than 11x14. Split meaning that half the image is in focus with the other half off. My teacher/co-worker was a lab tech for 15yrs. and he's clueless as to what's wrong and how to fix it. Our local retailer can't help and I have yet to contact a human being over at Omega Headquarters.