Have you cleaned the holes in the main jet yet? You clean the varnish out of the hole in the side of jet Down a little bit below the top. This is all that stuff on the bowl nut. Please post a follow up.
'16 Camry LE STP synth 0w20 and STP filter. the Fridge
1994 Ranger ,the Rat, 5w30 dino, STP filter
'16 Camry SE, Valvoline HM 0w20 and OEM filter
Thick oil is better