Position markers query

Hello again lovely people!
I have a question about position markers. I watched Kyle’s vid but as I have a nagauta shamisen would that mean my positions are different to a tsugaro?
Sounds like a stupid question now I’ve put it in writing but any help would be great! :blush:

It should be. I believes Tsugaru style the Sao is larger and longer.

For Tsugaru style the sao is thicker, but I think the length is the same.

I think positions are the same on both tho