The Dr. Zooch kits are Stand-WAY OFF-Scale at BEST.
If you want a kit that looks 'something' like the full scale original, they are fine.
If you expect precision, DON'T buy one of their kits as it will be sadly disappointing.

They are fine for what they are expected to be.
If you want a nice Mercury Redstone of this size, pick up an old K-41/1241 Estes original on ebay.
Expensive and a chore to build, but FAR closer to competitive scale.

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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 !