Bongoes hardware question

Hi guys !!!
I have a little stock of Bongoes hardware, it come from an old french manufacturer named "France Percussions" wich stop long time ago.
Some rust but it's good. Just one thing, as you can see on the photos, the " V " are straight, without angle.
I have already seen old bongoes with this kind of " V " but I have never mount skins on it.
is it difficult for mount skins and bad for the tension ??
If some of you have this kind of harware, or any experience in skin replacement with this kind of rims, your advice are welcome !
Congalou.
I have a little stock of Bongoes hardware, it come from an old french manufacturer named "France Percussions" wich stop long time ago.
Some rust but it's good. Just one thing, as you can see on the photos, the " V " are straight, without angle.
I have already seen old bongoes with this kind of " V " but I have never mount skins on it.
is it difficult for mount skins and bad for the tension ??
If some of you have this kind of harware, or any experience in skin replacement with this kind of rims, your advice are welcome !
Congalou.