I haven' t tried the GK, but have the Sims Modular Stabilizer
on my Q2. I use 1 module on the inside and 2 modules
on the outside with the addition of a Sims Stabilizer
Enhancer on the end. I like the balanced feel this
gives the bow in my hand and, though there is little
vibration in my Q2 to begin with, using the Sims Mod.
Stab. eliminates all vibration.