Another Rolleiflex strap issue

[mike kim]

I took the scissors off the old Rollei strap to use them with a new and modern nylon strap. However, I realized I won't be able to regulate the strap length unless the adjustment system is the same as the original (or Luigi's).

Is there any strap with this system so I could use the scissor clips? I'd rather use them instead of an OpTech strap...