Agree 100%. Another common approach to further mitigate manufacturing reliability issues is to contract a single vendor to make and assemble the mechanical uni

Agree 100%. Another common approach to further mitigate manufacturing reliability issues is to contract a single vendor to make and assemble the mechanical unit. Basically everything from input shaft to output shaft goes into a box. You put the motor in and build a contraption to measure the output torque, etc. You only pay them for units that actually pass the test. The failed units are their problem. Look at the price they'll quote you for this and you'll know how reliable they really think their process is.