Hey guys-new to the site. I've been in the business for a couple of years. I currently mow with a 32" toro and I noticed this past week that quite a few of the lawns I mow are getting some brown stripes where my mower tires were on the previous cutting. I, along with 2 others, have checked the mower up and down for any possible leaks onto the tires and have found absolutely nothing. I don't think the grass is stressed, especially this early in the season (I'm in Colorado), but I do notice it isn't as noticeable on lawns of customers that stay on top of their watering. Any thoughts? I've been spraying down the mower and trailer, and am wondering if I need to use some kind of cleaner on them. Any help would be greatly appreciated-no customers have called about it yet, and I'm hoping it doesn't get to that point! Thanks.