biz hub 750: new fuser rollers.... not quite fusing! lamps okay

[inkstrum]

Both upper and lower fusing rollers replaced. The image is not quite fusing (will rub off with effort). Previous rollers fused the image okay but worn in a few spots picking up toner. Fusing lamps in both rollers working. Do the universal generic rollers available (for 600, 601, 750, 751, etc) work okay?

[allan]

Is the green release lever broken? Than can cause the rollers to have little pressure and cause a badly fused image.
Yes 3de party rollers i used worked fine.

3de party toner on the other hand could cause the fusing issue.