Hmm, interesting. I haven't changed the filter on this bike myself yet.
Frankly, I'd like to get a new set of pipes for this bike, regardless of the oil filter issue. The stock ones are suffocating this poor motor. I haven't ridden a V-Star with better pipes / filter, but they've got to help. Alas, my wife is a speech therapist, and enjoys the ultra-quiet stock pipes because they're better for her hearing. She's right, of course; it'd just be nice to unleash a little more of what this motor has to offer.