Im rather nervous with anything electronic or computer related as I only have very limited knowledge and its all a bit black magic to me so a little un easy about changing anything if its working ok as is, but I have just had a look at it and maybe one day I will. im still learning the very basics of machining, I just cut a part with a few tool changes but im changing the tool by hand and then sending it to zero and adjusting the z height by just adjusting to tool in the collet which is not great. Im only down near Brighton so not a million miles away , I could really do will learning a lot more!