rollei TLR, 12/24 switch

[apershin]

Hello,

 

Can I use the 120 film with 12/24 switch set to 24 instead of 12? I

want to do it because in my rollei it often slides down from "12"

to "24" position. it's not a big problem by itself, but it sets the

frame counter to zero, and after that I don't know exactly how many

frames left.

 

Any issues with frame spacing or something like that?

 

I have a rolleiflex 3,5F, model 4

 

Thanks !