What pressure are most of you running with? After checking the pressure on all 6 tires not one is the same. I know they run with low pressure. My fronts were 9lb and 10ld middle 7lb and 5lb and rear are 3lb and 4lb. I was thinking of putting them all at 4lb maybe 5lb for the front because there's more weight up front. I did find a parts manual online but I've not found an operating manual yet.