I will propose to the next meeting to buy an upgrade for the shapoko. It is a modification that will increase the z axis travel, double the speed, and avoid the spindle to hit a motor plate if you making an error in you code.
I have attached two pictures. One is the actual set-up. you can see that if you lift the spindle (bottom left) too high, it could crash into the motor when it rotates.
The upgrade kit (second picture) allows to extended the z axis travel and suppress any possibilities to damage the spindle. Here is the link for buying the kit:
I also bought, last week, 4 feet to level the machine. I will include these items in the vote.
The total cost (upgrade kit +feet) is $60