>You get what you pay for I am afraid :(

As a complete newcomer at CNC , first thing found out was what gives first if run an axis into its end stop at full speed, answer on 3040 anyway is the coupling, now keep a spare along with a spare TB driver chip. At least at this level not so scared to try things that might break things.

It was the loom fracturiing that killed the drivers on mine, has been fine since the re-wire.