Setting your endpoints correctly are just as important as setting your servo saver correctly. Unnecessary strain on your servo will cause it to fail eventually, sometimes quickly and sometimes it may take a bit but it will fail. Your servo saver should be set just tight enough to turn your wheels back and forth with full throw with the car on the ground. Anything more than that and you are just asking for trouble. The main purpose of the servo saver is to save your servo! If you hit a pipe or crash you need that extra play to assure it does not strip your servo gears or blow your servo altogether. having a plastic servo horn will also help as that would more than likely strip before your metal geared servo, but they are known to strip prematurely. Stick with aluminum servo horn, set your epa's correctly and tighten your saver just enough, and then secure it with some CA glue so it stays put. You should be fine from there