The most recent Blackbird is the re-release of the smaller mid-80's Estes one.
Incidentally, the Estes one is MUCH more scale-looking than the Centuri one as the fuselage has the right profile whereas the Centuri one had a non-profiled round-tube that was anything but scale-like.

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When in doubt, WHACK the GAS and DITCH the brake !!!

Yes, there is such a thing as NORMAL, if you have to ask what is "NORMAL" , you probably aren't !
Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY.
ALL systems are GO for MAYHEM, CHAOS, and HAVOC !