welcome to both of you new guys. its kinda funny you got both kits because you might have a 660 brake spring in the 440 and a 440 spring in the 660, so you might be ok. on the heat and the cases its always a nudge unless you maintain that heat for some time. the nudge can be a rubber mallet or the case screws. that is the part that gets my heart pumping putting those cases together.
there is a good story on that. there is a guy in germany that works on chainsaws and i saw him do the heat thing. now i don't speak german, but watching him i about came out of my seat. you can tell he was doubtful or at least a first timer using that method. lots of folks get hung up on using a press. anyway he took a really nice heat gun and got that case hot as fire and he was working on installing a bearing and it took it like a, well, it swallowed it, and it stunned him, speechless and then excitement, it was so easy. but when we are working with the crank the short side 100% of the time for me slides right in and the other side about 70% of the time until i get the persuader. i think its the hump on the crank. twice for me it was the guide pin out of whack a hair. anyway it works and getting there is the best part for me. seeing that beautiful case come together.
if you happen to run in on anything on the 440 that is improved or worse or worth noting please also post it in the 440 build thread so when guys are making a choice they have the latest info. we have not had any new photo posted there in a good while. all info welcome so pay it forward best you can. this thread is killing it and the 440 is a really great saw and kit.