I’ve been playing around with my SS slim the past couple of days, and I’m happy to report I do feel justified adding another Tempest to the collection 
I’ve swapped rubies and the SS core a few times, and I think I’ve got it dialed in. Both rubies and the SS core work best 10w higher than my T2 settings.
I’ve got stem closed, head fully open, and the bowl set to medium. I do have my YLL adaptor set slightly higher than the Mad Heaters manual. The ceramic disc is pushed down flush to the bottom of the glass tube to try and concentrate the heat on the ball chamber
I have just tried the SS core with 95w x45 seconds. I’m taking very short joint style puffs, and slowly blowing the vapour out. I got about 15 hits with visible vapour, and I stopped the clock at an impressive 2 minutes 30s! I think my record with the T2 was close to 2 minutes
I waited a couple of minute and did one more 85w x40 cycle. I got 10 puffs over 2 minutes. The vapour for both cycles was very smooth, and I even managed to blow some pretty good “smoke” rings 
This is probably the best set up for MTL sessions. Check out the AVB after those 2 cycles 
