I couldn't be more impressed with this thing... except... it stalled/shut off on me quite a few times. Hoping its operator error. I run about 1300 to 1400 rpms doing light fel work and seems fine. Then when I'm driving with load it just shuts off immediately. No bogging or warning. Just off. No warning lights. Starts right back up. Any solutions? Do I need to contact my salesman? Thanks y'all.