walker evans shock question

at one time a few months back I saw a company that made a spring retainer for adjusting the ride height. it was a company that made them due to the stock ones getting seized up and not moving(problem I have now) it was a 2 piece retainer that clamped and had set screws but Ive tried finding them again now that I need them and cant. hoping someone will know what I’m talking about and can point me in the right direction