the stock servos are odd. Ive had a rs10 servo quit after 4 or 5 packs. My tornado epx pro servo has lasted more packs than I can recall. So its hit or miss. And if yours should fail quickly, redcat will replace is free of cost.

But, buy a tower pro MG996r off ebay. they ship from hong kong, so buy one now and when/if the stock servo fails you will have a metal geared servo ready to drop in it. They are $8-$10 shipped.