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VinnieFjester and fks will have a different hole pattern, so you'd have to redrill. not too big of an issue, only downside is you might not be able to mount them exactly where you want them since the holes shouldn't be right next to each other.
BWalmerMight have to be around -.5cm from true center. You may want to consider just getting the regular Jester or Griffon which will have the same mounting pattern.
Tumble_Weavewould the mount stay in place if I were to do that?