I'm part way through the first of my 2 builds and I am curious about the flexible couplers that are used between the motor and the leadscrew. With very little force, I am able to move my axis about 1mm in each direction, extending and compressing that coupler. My concern is that while cutting, this will not have the necessary holding force when making cuts in rigid material in the direction of the axis. Of course, I could just wait until I finish the machine and try it out, but figured there may be some feedback on the issue if anyone else has experienced issues. Should I consider rigid couplers? Or, should I put the flexible coupler behind the motor plate and use a bearing to hold the leadscrew? I wanted the coupler on the inside of the motor plate, to keep the motor mounted as close to the plate as possible. A photo of my configuration is attached.