Buttonhole on second side was only half the length...

Question

Test buttonholes were good. The stitching on the second side was much denser. Also appeared that there might be a slight feeding problem with the fabric. The width of the buttonhole was shorter than programmed.I own a Pfaff Tiptronic 2020 but under the product line it won't accept the model. I put in the 2030 model so it would accept my problem.