Hi everyone , I’m trying to figure out if my ariens Pro 28 can have one hand interlock on the auger side. If I engage the auger then the drive I can let go of auger handle and the machine works with just the left handle. If ( when both handles depressed ) I let go of drive handle the auger continues but drive stops. Is this normal or does something need to be adjusted? I can’t find any info on it. Thank you in advance.