Should I be concerned with the loaping idle of this B & S engine. Less than 10 hours on the mower bought in March.Starts on 1st or 2nd pull now when starting up. It intermittently starts the loaping when mowing. Before warranty runs out, would like to make sure i do all I can to get it right. This is my 4 mower with B & S engine. Never has issues till this mower. Should I forget it and move on? I'll try to post a link to a short video with the sound. https://share.icloud.com/photos/086LoQTgy0cv3yJ-P8Pnm7GVw