To answer your question about the BC Teleport, you probably just have to get used to the timing after the stinger. Practice the BC Teleport by doing this: j.S xx Cold Shower(2 or 3 shots) xx Stinger xx Bold Cancel xx Air Trick j.S.
To answer your other question, you probably need to do the s.S xx Clay Pigeon xx Prop Shredder a little more faster. If that doesn’t help, this new BnB should never fail you: (in corner) s.L s.M s.H xx Stinger xx Bold Cancel xx Volcano j.H xx Killer Bee, s.S xx Clay Pigeon xx Prop Shredder xx Air Trick xx The Hammer, Cold Shower(2 or 3 shots) xx Stinger xx Bold Cancel xx Sky Dance (if it whiffs, do Acid Rain xx Volcano j.S, Volcano-Beehive xx Million Dollars. If all hits connect, continue with this.) xx Beehive, Stinger xx Bold Cancel xx Jet Stream-Fireworks xx Million Dollars.
If you get a Hammer off of anyone that is already in the corner, proceed from Volcano j.H xx Killer Bee. I hope this helps.