Hi KenThanks for your observations. I think that your e mail below is self explanatory for Jonathan to use and speak to GFT about. There is no point for me to rewrite it.Regarding the controller buttons, we have what we have, but I see the problem as a delayed reaction to the action of pressing a button. The functions need to work as soon as the buttons are pressed. I do not remember the same issue when using the original Lima production. Jonathan, please note this.I am also concerned at the barely discernible differences in the three speeds. The first speed should be quite slow, second speed towards the middle of the range and third speed would be top speed. Jonathan please note.Please note and discuss the contents of the e mail below with GFT. Thanks.