HI ! I don't agreed you add more bearing in you reel because you were waste you money and time but if you still want more bearing on to you reel , you should buy a new Shimano or Daiwa reel.
Shimano- Stella reel 14-15 B/B
Daiwa - Branzino 11CRBB
Daiwa - Saltiga 14+1 B/B
Shimano- Anti Rust Bearings ( A-RB) The secret of long- term rotation performance is to prevent any form of rust, corrosion or oxidisation of the bearings, which can cause a reduction in the reel's performance over time.
Daiwa- The CRBB is a sealed mechanism that contains low viscosity oil. By being sealed it resists salt water and all types of debris, allowing of bearings to remain smooth and unhindered.
Also when you can buy any type the bearings to fixed you reel that bearing are not the quality and not oxidisation.
Daiwa and Shimano company are not to sell they product to any company!!