I have already found replacement parts and they are not so expensive:
rod 16mm with one player - 18 EUR
rod 16mm with two players - 20 EUR
rod 16 mm with three players - 21 EUR
rod 16mm with five players - 23 EUR
In addition the handles are 2 EUR per piece.
Here are sample photos:
In addition the bearings are 2.5 EUR per piece:
The total enhancement cost would be:
2x82EUR (rods) + 8x2EUR (handles) + 16x2.5EUR (bearings)
or
220 EUR
The question is about the game play - for sure with the new bearings the movement of the rods would be better, but how about rods with bigger diameter?
Best regards,
Marin