I got a part number 6512027 (bushing) for the steering on my 743 and it was made out of thin plastic and was $9.69, I was a little upset. I also got part number 6558736 and it was made out of metal (and alot more) for $11.06. The question is this bushing suppose to be plastic? Seems like it would wear out in three days. Thought it would be made out of metal or at least a price of $1.50 or something but not almost $10