um, Whats A Good (Cheap) Locking Diff I can Get For my truck, I have driven it another week and tried everthing, It is Still Stuck, Its like I have a Frikin Spool! Need a Replacement Very Soon, seing as I drive it over 1,200miles a weekend( almost want to say its eating more gas allong with the rear Tires&#33, Any Suggestions....?