> or even have an idea. They have an idea. "Tests of a similar control jet on the ground suggested a Teflon seal in an internal valve could swell at higher tem

> or even have an idea. They have an idea. "Tests of a similar control jet on the ground suggested a Teflon seal in an internal valve could swell at higher temperatures, restricting the flow of propellant to the thruster." That is the idea they have and they are checking if it matches with the measured signals / explains the observations.