Keep this in mind in case you have leak after the warranty is out. I fixed the leak in mine with JB WELD and it is still holding over a year later. The dealer gave me the new tank and told me to return the old one. I said ok when it gets empty, so far it has never gotten empty because it hasnt leaked so the new tank is setting in my shop in the cardboard container it came in along with the new designed support for the skid plate. It took them 6 weeks to finally get the new tank in and by that time, I had taken off the old one, acetoned it good, took a wire wheel on my 4" grinder and gouged it up good at the cracks and acetoned it again. Mixed up some JB Weld and layed down a goodly amount on each nut and let it dry. While that was happening, I fabbed up some angle and plate and built a proper brush guard for the tank. When reinstalling, I put some 1/2" thick foam rubber under the mounting points to cushion it (this was from an old foam mat for workstation standing relief) It been there a long time now and still holding and it is directly on the bottom of the tank.
You could likely fix yours the same way. You might ask the dealer about keeping the old tank if they dont have to send them back. I know they have to keep the broken parts for a period of time in case they are audited by the company and want to see the supposedly replaced parts, but sooner or later they throw them out.