Bummer on the header but good work on getting it fixed,
I killed a stocker a month or so ago, and I've killed a few stockers over the years, plus a couple built ones, using slicks.
Its not the slicks that do it, its the power, but worry about that over winter and get some runs in now. Make sure you have a filter on the cooler line BEFORE the cooler, so if it frags, it won't plug or ruin it.
When does your season end?