wind deflector

Hey, I’m hoping someone here can help me. I recently purchased a 2002 SLK for a bit of fun and so far I love everything about the car. The only issue I have is that the car came with the original windbreak but the studs on the side of the roll bars is missing is it possible to replace these?

Looking for ways to solve this problem. The front air cap is staying up and as I try to retract it will come down and then returns to the raised position. I have taken it to Mercedes dealership only to be told they have checked the fault on their system but it doesn't appear to be a software...