I have a Samsung Dryer Model DV338AEB/XAA. I got it along with the matching washer from my sister-in-law about 3 years ago. Since then it has been continuously having lint blowing out of the exterior exhaust vent. It also started making a loud noise and a vibration that was shaking the house. like we were drying half a dozen sneakers. I thought it was the Drum support rollers, I ordered 4 and took the dryer apart. I noticed that the blower fan was about 3/4's packed with lint. I cleaned it out and installed the two rear support rollers and it runs great, no noise and very little vibration, however, it still is sending lint out the exhaust. The lint screen seems to fit properly and we clean it after every load. Anyone have any ideas why this is happening? Anyone ever run across this issue?

Could the element, thermostat and fuse kit on dryer test good for continuity and still be bad or could it be a bad control board because it doesn't have any error codes?