Hi Norm,
I have had quite a few cracked ones to the extent I thought it was a design fault of the disk. I know what you mean about the cost. The price of that one on Ebay, which is the cheapest I've seen is nearly half my normal sale price of $75. I guess my best option is to buy another wreck or two from the recycle shop and hope for better luck. Like you said in one of your posts, the last thing I need is more Briggs spares.