The Bosch is actually purolator. Make sure it's the black labeled Bosch as shown. If not all you have to do is tap the head down some and it'll be fine.I've been getting used to a new to me 05 Warrior with 16k miles. Naturally, the first thing I did was an oil change. I used a Purolator ONE filter. It leaked in the manner discussed in this thread. I got a new OEM filter and replaced the Purolator. At normal filter tightness (contact plus 3/4 turn) it too leaked, though not as badly. I got another filter and a filter wrench (I had damaged the filter tightening it enough to get it to stop leaking.) and put the filter on monster tight. No significant leakage, but I don't like that much tight on an oil filter.
I found that the face of the Purolator is convex rather than concave, much like the non-ST Bosch being discussed here. The Yamaha filter is much more concave. The Purolator filter had a very noticeable circular scrape on the face. The Yamaha filter I removed had slight marring in the same place.
It appears the filters are contacting the large bolt inside the filter well on the engine. This is listed as #18 bolt union 90401-20007-00 on the parts fiche. I've ordered this part and intend to bevel the nut portion a bit to try and either prevent or lessen contact.
Meanwhile I'll be looking for one of the ST3323 Bosch filters to see how it works.