The only rocket I recall from Estes or Centuri that used 1/16 Balsa for fin stock was the Astron Sprint, which was a "Minimum Drag" BT-50 max-Altitude 18mm design.
There may have been others, but the only one I recall using 1/16 fins was the Astron Sprint.
1/16" fins get beat-up really easily.

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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 !