Looks good Kyle!
On your toneboard you might try grinding/filing a groove for the O-ring to sit in just in front of where the reed slips into the notch. -Here I even notch the reed in the corresponding place, to lock it into place. Two small dimples in the reed right after the O-ring will sometimes make a world of difference in how the call sounds. The dimples lift the reed off the bridge.
HuntnCarve
Dave