in the older cars with two pumps and the bosch system many had issues with the prepump and the symptom was it ran fine until they reached about 1/2 tank , Ive spoken to owners that didnt fix it but kep tthe tank full.. Yours is a different system but I;d just make a note that wheather the tank is full or low might make some difference..

If you do open the tank, I'd siphon it out into jerry cans first and take a flashlight so you can look for any crap in the bottom. You might seal the flashlight in a ziploc..

keep the old bulb style trouble light way far away, I had a friend that tripped on a trouble light, broke the bulb and he had a can of open gas he'd drained. I'll spare you from the nasty details, It instantly created a very bad and easily avoidable situation.