I have found one local gas station where one specific pump allows me to add gas at a very slow and controlled rate. Most gas pumps seem to be pretty much full on or shut off, but this one pump that I use allows me to get about a gallon short of full under the normal locked input. Then I gently hold the trigger on the pump and add gas right up to where it is pooling at the entrance. I know it doesn't really make sense to try and squeeze in as much gas as possible since I am not planning on being somewhere where gas would be hard to come by, but I like to fill up as much as it will hold before parking the Spyder in my garage.
My RT is a 2021, and the gas gauge is wildly inaccurate, and the data showing the mpg seems even worse in terms of accuracy, often showing me getting 3 or 4 mpg when in fact I seem to average about 32 mpg regardless of how I ride. I had the chance to ride a 2025 RTL yesterday and like the gas display much better, but wonder if it is any more accurate than my RT.