I just did tank bolt replacement using Perun Moto bolt replacement kit. Good stuff and Nikola gets it out the door promptly. 2014 bikes still have this issue.
Remove air box, battery, all plastic, loosen top bolts, use an impact gun on left side bottom torq bolt, remove bottom bolt completely, unhook gas line by battery then lift tank up from rear. Keep lofted using tie downs to handlebars. Remove rubber grommets on tank bottom, install new grommets and stainless tube, lower tank down into place. You may need to file the stainless tube to fit. Install new bolts and torq to 10nm. Now, replace top bolts using loctite blue. Tighten to 15nm. Oh don't forget to remove exhaust bolts on top and where it fits into exhaust pipe. Put exhaust bolts back in when finished to 25nm.
It's a complete pain in the arse but worth the worry free results.