i love my EGO mower, i bought the trimmer and blower too. i've mowed probably 10 times this summer (bought the mower may 2015) and the last 2 times i've used it on moderate grass height (probably about a 5 setting) being cut to 3 the mower would flash yellow and die. i can start right back up but dies again cutting the grass in the same fashion. i made sure everything was cleared in the blade area and chutes (i tried mulching and bagging and both failed) and i've tried 2 different fully charged batteries. what can i do to fix the problem?