2008 Lexus Gs

2008 GS350 - 129k miles - 1 owner Looking for input on whether/how to proceed as this is now a multi-year problem (2019- 2021). My 2008 Lexus GS350 had the following recalls (All fuel and engine related): NHTSA CAMPAIGN ID: 18V432000; NHTSA Campaign Number: 14V647000 NHTSA CAMPAIGN ID: 09V020000; NHTSA CAMPAIGN ID: 10V309000 Before the last fuel assembly recall work was out of warranty 2019, I started experiencing an extreme fuel odor after a decline AND each time car was started (noticeable only with windows down). No warning lights, system reported no issues. Independent mechanic found a leaking fuel injector (port on that side is "clean".) (Lexus dealerships found no issues). Replaced fuel injector, no change in fuel smell, strong as ever. Neither Lexus or Independent mechanic can determine what is wrong. Pandemic happened and I only drive the car once a week to the grocery store, strong fuel smell on startup still happens. (Haven't been on any incline/declines). 5/9/21, filled gas tank, started car, made 2 stops before heading home, "Check engine, Check VSC" and a myriad of lights came up on dash. (Total of 3 startups after filling tank, lights came on after 3rd start). Code comes up - P0430 - Catalyst System Efficiency Below Threshold Bank 2 All the fuel related symptoms & issues can't be a coincidence. 2 Fuel assembly recalls, fuel smell, leaking fuel injector, continued fuel smell, now catalytic converter issue even though car is barely used in the last year.