Prior to the B3, Estes had a MAJOR thrust "B" through 1961.
A B16 existed. Those things had a complete propellant burn time of .07 secs with 16lb of peak thrust.
That is a REAL kick in the tail.
If it could be done back then WITH almost ZERO automation in production, it could be done NOW much more safely.
The sissies and mamby-pambys just won't do it.
We can't even get the moderate-thrust B8 and C5 pintle-port motors back.
REAL BP engines are PORT burners !

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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 !