Sounds familiar. We have a house nearby with the same conditions. Plenty of oil inside, but not to your length, and "Cactus and Tumbleweeds" on the outside. Not enough hook, too much, not enough, too much,......
I have had my best luck starting out with a highly polished pearl particle with the pin on the PAP and then going to a polished reactive when the carrydown starts. But the ball is only a small part of the answer. Speed control is the most critical factor. You need to really let 'er rip on the down the outside boards shot, or be gentle but consistant on the deeper inside shot. If you are slow down outside and try to make up for it with weak equipment, it gets doubly hard. Inside, you need to get the ball farther outside at about 40 feet to use the "bumper". Playing tight inside is too much work for a so so bowler like me.
Some people just eat this shot up so it can be done. Some people can fluff an agressive ball with speed down and in and some people can crank up a shot through the oil but unfortunately we seem to be neither. Just think speed control! Hope this helps a little bit.