I am looking for a Yeti and am on a budget. I found two 2017 Yeti 129" at a dealer and they have them on for a reasonable price. I heard from a guy on kijiji that all 2017 tunnels will need to be replaced or upgraded after a season of riding so i called Camso direct and asked there people. Camso told me that they changed companies for Tunnel construction in 2017 then again in 2018 and again in 2019? I heard in 2017 they were outsourced to China and they just wont hold up. Can someone who has owned a 2017 Yeti or knows more about it talk more to this.