My 2019 F3 base model with 4600 miles on it is giving me problems by not shifting into reverse. This started a couple of days ago, when I first take off it seems fine but as my riding progresses the shifting gets a little tighter and not as smooth. It will downshift ok on its own but I always downshift manually when driving it. Today I went to the store and when I tried to get it into reverse, it won't shift. What do you all think the issue might be?

Thanks, Arcamguy