Hi: I have a Kenmore F/L washer 796.40272900 , I replace the Bearings, and I bought a new spider. When I was trying to insert the tub/spider into the outer tub, the shaft didn't go into the bearings. I took out the tub with the spider out. I tried to insert the old bearings into the new shaft, but none went into the shaft, so I tried to insert the old bearings into the old shaft, and these went-in both perfectly. Then I inserted the old spider/shaft in the outer tub, and the spider went in. I wonder if the new spider/shaft has the wrong dimensions, or should I buy bearings and spider in a set, or am I doing something wrong. I bought bearings in a different place than the spider, none of OEM. Does somebody has experienced a problem like this before? Please help with any idea.