I received the revised file guide from Goran the other day, and today I found a spare moment to give it a try. I have never used a file to sharpen a saw chain in my life. This was the very first time. It took a little while to "get the hang of it", which I fully expected. But it wasn't too long before I was getting perfect angles and the teeth looked like they were sharpened by a pro
But the best part was yet to come. I slapped the chain on my 7900 and headed out to make some cookies. Now I've run square ground chain before, including a test chain that Goran had sent me. I know the chain that Goran sent me wasn't perfect, it was sharpened with an early version jig.
I was really impressed. Super smooth, and boy did it cut quick. I'm afraid I won't be going back to round ground chain.