I went the solder method because I wanted more flexibility for if I do decide to go with a different carburetor, which at this point I'm happy to say is notably further down the list and thank you. Still a novice, but try to do right by my motors, even if I don't know what right is all of the time yet. Pretty much my thoughts as well on rock, obviously prefer slightly rich over lean. On the oil aspect, I did upgrade to the "full synthetic" Walmart 2-stroke oil, but haven't gone all-in on any specific oil yet. Have read quite a bit, but it's been a lower priority the last few weeks a after the cylinder flaked out (figuratively and literally). I have no doubt I'm going to mess up this motor at some point.. I tend to learn the most by breaking things (in my defense, I'm usually breaking things by trying to fix or adjust them, and usually hit some kind of snag I cannot overcome).. I'm calling this my learning engine.. not intending to break it, but aware that I probably will at some point. I'm hoping by the time that happens, I'll know a lot more and will have made a decision on the kind of oil I want to commit to for when i actually pick a good engine, carburetor, etc. Thank you for the reply, happy to see my thought process isn't too crazy or out there thus far.