I have a Series 1 35-85mm Vari-focal in K-mount. Who it the go-to person for repair and adjustment of Vivitar Series 1?
I had my Vivitar Series One 24-48 serviced at KEH. The zoom was sticking badly and would lock in position. They did a wonderful job with it and it works great now. As I remember I paid the $115 for the job but I am very happy with it.
A shot from my SRT 101 and the 24-48. Nice lens and I am very happy with the repair.
I have one in Canon FD mount and it is one of my favorites. No wonder you want it working well. But no leads on repair...sorry