I know all about porting Dolmars. I have several ported Dolmars that are all original with the HD filter kits. I've even got a blue Makita with the solo stroker crank in it. I love my Dolmars for sure.
As far as porting numbers I feel any builder who doesn't openly share what he's doing to your saw is a strange thing. Any time I port I saw I send it back to it's a owner with a full build sheet of everything I've done to their saw and the exact port timing numbers, squish measurements, timing advance, and the squish band and base machining amounts. Porting a saw isn't some kind of secret voodoo magic. Transparency is something that goes a long way with people. If I was buying a saw someone else ported I would definitely want to know the exact numbers to know what to expect out of it. Especially when purchasing over the internet. For example a 95° exhaust port timing runs ALOT different then a 101° exhaust port.
Again these are just my opinions.