Your spedometer is 3.125% off. At 65 thats 2-3mph slower than you are actually going. It's up to you if you want to. You can buy a procal and do it yourself or pay the dealer to do it.
"You didn't buy it to look at it!"
2000 TJ Solar yellow, 3.73, 178k, limited slip D44
2012 GMC sierra crew cab--Daily Driver
2008 jk X 6spd Red Rock---Sold and missed