Yes, you can add the buddy seat if you remove the cup. You will make use of a threaded rod, as it will help you to create a good inclination.
For the best threaded rods, you can visit Albany County Fasteners.
Refill 80/90 gear oil if it isn’t leaking badly. If you call an expert to repair it, they will be expensive. Have a snap ring plier and you can replace the seals by yourself. Visit www.albanycountyfasteners.com in order to get relevant materials to do so.
To keep bolted joints tight, we can choose from many methods. The most common is the addition of a locking device between the rotating part (nut) and the parts being secured (i.e. bus bars). That locking device often is a belleville washer. Such a device does not meet all locking device...