JParis, thank you i will give it a look. hopefully my answer will be there.

Please help. I have an Acroloc series 10 with a yasnac MX1 and was sitting in storage for about 17 years. Finally got it working manually but I cannot get the controller to let me set the parameters even after I set the thumbwheel to "1" and parameter line #6219 or #6259 (this one worked for our MX3) . Any thoughts? Which positions do you set the mode switch to? Is there anything else that needs to be done to unlock the parameter settings? Thank you , any help would do.