If you can, check to make sure that there are no visible obstructions in the way of the right control lever. There are linkages and sometimes dampers on these drive controls and something might be bent or bound up in there. A machine that new, you should be reaching out to the manufacturer to have them look into it. I know that is not something that you want to hear, but sometimes with a new machine, the best things to do is to get the manufacturer involved asap so that you can start the dialogue and put it on the record that you are having an issue.