Funny coincidence... My Maxxus had a small trickle at diverter #1. I stopped by the dealer this morning to pick up a new filter and asked him about it. It is covered by warranty, but he showed me what and how to check it. The cap/lever just pops off, then the top of the valve screws out. He told me to first make sure it was tight. It was not, I tightened it hand tight. That fixed it. If it is tight, screw it out and there are two or 3 o-ring/gaskets. Make sure they are not damaged and are seated right. Otherwise call your dealer.
Hope it helps
txwillie