Not one to leave well enough alone, I just had to tinker with the delivery end of the Tutoro oiler. The plastic pincer tips always worked just fine, even though they seemed flimsy to me. I had the idea of using 3/16" copper tubing, which just fits inside 1/4" clear plastic tubing and, with a little sanding, just inside a 1/4" brass T-connector, fastened with solder and a propane torch:
The end result, firmly attached to the swing arm with a stainless hose clamp, seems very solid and seems to deliver the oil just fine. I squeezed the two copper delivery arms until they touch the sprocket, figuring the steel sprocket with will shape the ends of the copper tubes to perfection.
At the top, reservoir end of things, the 1/4" clear plastic tubing just fit over the smaller original clear plastic tubing, so I just snipped the original tubing just below the reservoir connector, jammed the newer tubing over it, and secured both with a tie wrap, like the original was fastened. No leaks.
There's no way a manufacturer could afford this kind of set up and be marketable/profitable, and I'm not certain my version offers any real improvement. After all, it if comes dislodged and caught in the chain, the outcome might be considerably more nasty that some flimsy bits of plastic. But I like the looks (even though it's totally inappropriate on a slick sportbike) and I like the fact that the tubing very much stays put. I built in enough extra tubing in my bends to accommodate chain adjustment, and, if need be, I can always move the whole assembly aft, down the swingarm.
After using the oiler for a good while now, I'm totally sold on the concept. There's no buildup of black gunk, no slinging of oil onto the rear wheel, and the chain always appears just moist. The images of the chain in the above photographs show its condition after merely being wiped with a rag. No solvent chain cleaner necessary. It' really nice having a chain you can eat off of, but it's really hard to get the tacos to balance on the sucker!