We had a discussion about edge inserts a while back and how it took the chip companies several tries to get them right. Here are two $5.00 chips from the "original" Monte Carlo. Notice that there isn't a standard size, or even rim location, of the inserts. I think they were probably lucky to get them in at all in the 40s. I have an extra for sale/trade. Send along an email if you can use it. steve