I was cutting my lawn today it was 87 degrees, I was all most done with cutting my rms dropped and I was losing power like the brake was on but it was not, then all of sudden tractor was running fine ,twice this happened to me, once I was done cutting the lawn, I loaded tractor on my trailer and then I re started and it had a rough idle, then a 30 min drive home unloaded off trailer ran fine no issues ran as it should, I am thinking condensation in fuel? clogged fuel filter? I did check all connection and all we connected, I have 150 hrs on my machine.