dragonrider / anyone else who may know,

Is it worth double soaking the weed? Currently I make gd by using 1 oz of everclear per 1/8 oz of weed. I soak it once at 170 deg. for 20-30 minutes. This has worked without fail. I wonder however if I'm leaving THC behind. Has anyone sampled gd from a 2nd soaking to check its potency? If anyone knows if a 2nd soaking increases yield, can you please let me know how you do this (times, temp, volume of everclear, etc...). Thanks!!