I was reminded how frustrated I get at the cost of stamped parts by reading a member looking for a gas cap.I've been doing this for many yrs.No problems have shown..In ref. to idler pulleys...Place pulley in a vise and With a 4" cutoff wheel cut notches about every 3/8 " around outside of lip that holds bearing in from the center out. With a 1/4" tapered point punch lip back until it just clears bearing going all the way around.. Turn pulley over and tap old bearing out.If the bearing comes apart you might have to do 2 notches on the backside to be able to drive the old race out..Clean up inside and tap new bearing in place.Using punch again, drive the pieces back over the bearing.Then turn over on large socket or piece of steel and tap firmly with hammer around the edge of cuts...Bearing changed...savings ave. #10 to $15 per pulley.At my local auto parts a 203 bearing is less than $5. Hope this helps someone...