I have my wife's Trek 830 torn down and everything is getting a clean-up and lube. I gave the derailleurs an ultrasonic cleaning and wonder what you all use for lubing the pivot points. In the past I've sprayed mine down with silicone and seemed to have good results. I've only lost one derailleur to pivot point wear. But I'm not familiar with all the new synthetic lubes that are available now. Any other suggestions?