I could not agree with blackshires above statement more.
I don't think Semroc sells most of it's product through "normal" hobby channels anyway.
I would venture to give an accurate guess that the majority of their sales are direct through their website, with the remainder mostly through small specialty rocket websites.
Unfortunately I have NEVER seen a Semroc product in ANY of the hobby shops throughout Michigan or Florida I frequent.

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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, TURMOIL, FIASCOS, and HAVOC !