The Stovebolt Site Forums The Shop Area Engine Shop 350 valve job question re; seat angle

I have a 1991 350 engine that I am working on to put in my 63 and I have a question. I took the valves out and want to clean the seats up. My Uncle has the machines to do the job, but can only do a 45 deg seat angle and my specs show it as a 46 deg angle. My Unlce thinks it will work OK, but I have never done this before, what do you guys think?

Thanks.