Patterned some this past weekend. SA20 Kicks ported full choke. Nice pattern, just had a hole in 6” diameter hole in the middle of pattern
Try a non Ported.
We did a bunch of pattern testing a while back and squeaky had 2 chokes that were exactly same but one was ported the other a non ported and the non ported a was superior pattern.
IIRC they threw reverse patterns. With the ported had a weak Core the non ported had a hotter core.