There's also, evidently, a thing in recent versions of TC that makes warp events happen less frequently if you haven't gained any warp in a while. So the best way to get warp events to happen (but why?) might be to craft a flesh golem or something every once in a while to bump your warp up just a little bit to reset the frequency-reduction thing.
I'm not sure if doing warping things when you're already as warped as can be will reset the frequency thing, so your best bet at this point may actually be to periodically eat just enough soap to remove a bit of warp, then craft a flesh golem to get it back.
Now that I've mentioned that, it would probably work by gaining a bit of temporary warp as well. If you get your "sticky" warp almost maxed out, and fill up the last little bit with temporary warp (by visiting the Outer Realm, or whatever that place is called, perhaps), you can repeat later wipe out that temporary warp using only one bite of soap- much less than the bar or two that it takes to remove a bit of sticky warp. And it doesn't cost a block of zombie flesh to refill that warp, either.
Also, I managed to get a couple of guardian spawns in my testworld with no more warp than the sum of the permanent warp from all of the researches in TC, TT, Thaumic Exploration, Forbidden Magic, and maybe a couple more addons that I installed in my test instance. The bar on my sanity checker goes up a pixel or two past the top edge of the lower marker thing; I got rid of all the sticky warp by standing in a pool of bath salt and eating a bunch of soap.
In any case, the contents of this post may be entirely meaningless. This is all based off a few pages on the TC4 wiki, and I have neither done extensive testing nor looked at the actual code involved, so I may be completely wrong. And this frequency-reducing thing that I speak of may not even exist in the version you're using.