troutfisher
Addicted to ArboristSite
IMHO, port timing is not where you start. There are successful builders out there that never put a degree wheel to the saw, not that I'm recommending that. There's FAR more things to porting than the numbers. I recommend you start by reading every post you can about porting. There is a FAQ thread in the stickies. In that thread are several links about porting. Study lots of pictures. Port shape is very important…to both performance and longevity. There are lots of does and don'ts. It's not really something than can just be taught in a thread.
I agree, no need to change timing much at all to warm up a work saw.