Agreed; it's easier to find like-minded fans if you post in your fave Beatle's solo forum. I always enjoy meeting friendly Paul fangirls anyhow.
Also, as far as Ringo fans go, I think Breedofrandy and Octie are the biggest Ringo-lovers here.
Was about to suggest them!
Also keep in mind that you don't necessarily have to have Ringo fans to get along with. I get along with I_Will and Emmi very well and they both blather on about Paul incessantly.
Of course I've also discovered that MrsHarrison and I are practically the same person.
I guess what it comes down to is spreading yourself about the forum and reaching out to whoever's friendly! Which, by the way, is
everyone.