Hi Anita,
While you are at it, if you haven't already done them, you might want to take a look at the Tek list of "factory updates/mods" for the 575. There are a BUNCH of them. I'm wading my way through them now on my 575. I'm about half-way there.
Here's the link to the 575 TekWiki, where quite a few of the critical mods are listed individually, there in the "Manuals" Section. FWIW, there is also a complete assembled "all mods" document floating around somewhere, but I didn't see it here. I might have missed it. It has every mod documentation assembled into one PDF
Anyway, the link;
Several of these mods did make a measurable improvement in my unit's performance. Some were reliability improvements.
Hope this helps.
Keith