My apologies ... I think I was just bent out of shape from wrenching on my Outback for 8 hours replacing front cv shafts, diff seals, all 4 shocks, and both rear hub assemblies(which also included a knuckle since I couldn't get one of the hubs out). The idea of swapping the trans didn't appeal to me at the moment ... still doesntWell, this is a fairly rude response, not sure how that didn't occur to you. You'd like help diagnosing a noise and you think a one word description is sufficient? And how was I to know your level of expertise? Plenty of folks here have considered servicing the CVT to be trivial only to end up making very serious mistakes, even with the FSM in hand, so I was simply suggesting a prudent course of action. Whether or not you're willing to pay the dealer for the fluid service is irrelevant. My point was: you're still under warranty so get it to them so they can document the problem at a minimum. I'm quite confident they're better equipped to diagnose the CVT than yourself.
Oh my, I beg your pardon for my laziness. Buuut... if you had taken the time to do a little more research, and as was already pointed out, you'd realize that this filter is rarely serviced due to the complexity of the job. This is why it's generally considered not serviceable - particularly at the DIY level. Besides, if you've managed to clog that filter, replacing it is likely the equivalent of putting a band aid on a compound fracture.