I think all new saws have a part throttle setting that is engaged when the choke is set. But to me, you starting method is questionable. With every saw I own the starting method is as follows: set the choke and pull it until it pops, no extra throttle is necessary. When it pops, take the choke off and pull until it starts. Even with old saws this works. With new saws, when the saw is taken off of choke, whether by pushing the choke lever off as with Efco, Husky or others that have seperate choke controls, or by moving the master control up as with Stihls, the saws are still set to start with a fast idle. I don't find it necessary to add extra throttle. It sounds like your L screw on your carb might need to be backed out just a hair??
BTW, starting fluid in a two stroke motor is not a good idea. It will strip the oil layer deposited by the fuel mix. It is much better to get a small squirt bottle with a little mix to prime a saw. I have to do this with my Mac 125 everytime it is cranked for the first time of the day. Otherwise, you will pull until lunch time to get the carb to prime and fire it off.