The reason for the diamond was only to gain a wider quarter sawn board. Your log was already squared up. I don't do a lot of grade sawing, mostly timber and long stock at that. The longest to date is 53', lots in the 40's. You can achive the same results as the diamond cut by cutting through and through with live edges, getting the widest flitches possible than resaw those to the grade you desire. Jims method of flipping would be a good idea as will, or else you will end up with a thick-thin board at the end, this is mostly true in your hardwoods not so much with pine. There was a local cabinet maker here who had lots of 2"-4" hardwood stock on hand, whenever he moved he took it with him. He passed on before he could use it all. Tim