Machine, from those first three balls you mentioned, it sounds like you should go with a Storm ball for your next oiler... All of the balls you stated have rolly characteristics, so its no surprise you dont get that desired look. I too, have this problem at times on the longer patterns.
The layouts you should try on the next ball should be pin up. Get the pin from you axis, say about 5 inches, and then work on surface. Many people make the mistake by placing the pun under the fingers. With todays high flaring bowling balls, this would be going against you. A pin down drilling tends to have the same energy throughout the whole lane, but a pin up has the nature of skidding more and reving up in the backend.
I would suggest a long pin, but I would suggest just getting the pin above ur fingers. One inch, or perhaps even a couple inches above should do the trick. This drilling would require a reasonable long pin but it dont have to be 5-6". If you have your eye on a next ball, then I would maybe try either a Virtual Gravity or a Furious. Both of those balls have that Natural Length with a big move off the spot. Hope this helps, John