I did the whole bearing replacement job including replacing the "spider". Dis-assembly and re-assembly went well with the Video as a guide. Piece of cake. My only concerns about the project is torque specs on bolts. For the most part they seemed to just go until it is tight, not super tight, just snug and tight. There is no such thing as super tight in plastic, it will pull the threads out if you over-tighten. I started in the evening and was able to stop at the point of letting the penetrating fluid soak over night then got back at it and finished it the next day. The original spindle would not pound out of my tub with wood blocks. I was shattering wood all over the basement so I eventually went to pounding right on the old spindle with a three pound sledge. I used penetrating liquid over night and still had to resort to the sledge. I had anticipated trouble and ordered the replacement spindle-spider with my bearings and seals. The unit is operating as it should. For installing the new bearings I used a brass drift tapping around the outside edges. Overall the job was not difficult but I have been a tinker for decades. Others may have more difficulty but follow the video and use logic and most people should be fine with this repair. The largest challenge is in the mind, the second was getting the spider spindle out of the old bearings. I used a twelve section muffin tin for the different screws and labeled them as I removed them.