ankles too low.

but aside from this, since we don't know if it was this gentleman who created those marks, does the method seem to work? because from the result it seems to me that after the treatment the string holds its tension,

A maple veneer strip would be preferable, to be cut flush once the dowel has been inserted....

I also apply a very thin layer of vinyl on the wood veneer.

I don't know where to find maple or beech veneer. Does anyone have an 'idea'?

I made them by planing wood, but you can find them from a furniture restorer.