Re: 100:1 Mix
I'm not an expert. Based off the thread and my experience with weed wackers and what not (Breaking in some)
My friend was always like woah dude too much oil (I taught him how to work mower and such, premix) He read the book but didn't listen to the break-in part, and it said raise till no oil spitting out or max like 32:1 or 40:1 on one of them.
I'd run a small mixture of seafoam switching to this new oil.
for the 100:1 mix, take it easy going up there, first focus on not having oil deposits. Once you're above like 40-50:1 take it slow & easy.
Lastly with the Opti2 I'd do like seafoam as said, but I would run it hot, then take it easy 3/4th throttle or so max.