Broken and improvements

As expected, something broke, but better now than later!
One component in the Coupler unit got broken when tapping, turns out to be a piece where most force will be taken during the tapping procedure.
A whole day spent back at the drawing board to analyse and identify the cause and found a solution. Then went and discussed with the genius at HKPC.
The modified design should be ready for more testing next week.
In the meanwhile, canned beer! Or better still, work on the pre-production design ideas!