I have a decent theory that sticking to the same spawns ups your drop rate for items, but that can't easily be tested by one person. I've found it helps, but idk if that's true for every monster anyway. In theory, if every monster spawn has a qeued (sp?) up drop like, dragon chain for dust devils, that means every spawn should have a different amount of kills per chain drop. It could be true, idk. And row could also change the drop rate entirely, let alone mess up the cycle of each drop... I just don't think it's as simple as a pinwheel effect as Jagex described. It's gotta be on a better rotation or based on lightning strike randomness, aka no consistency at all. And there's a lot of inconsistency when it comes to drops. On top of the fact that I know Jagex messes with drop rates sometimes, there's probably never going to be a true drop rate for items unless they cause items to have fixed drop rates permanently, which they undoubtfully won't. Just try not to cut down the chances of you not getting items, and you won't go nuts like I apparently have :) (though obviously sometimes it helps *points to signature*).