1989 rheem furnace pilot light will not stay lit

Try replacing the gas thermocouple. My furnace did the same thing about 3 weeks ago. I replaced the thermocouple and problem solved. Costs about 10.00 bucks at home depot. Very easy to replace.

Had to replace the pilot light assembly on my Rheem furnace Model 3608-140AB. Now the pilot flame is extremely large & yellow. I cannot find the pilot light adjustment screw. Any ideas?