[HayZee518]

The pilot flame orifice is a set opening. if it's replaceable I don't know. I do know that since early times there's less and less "gunk" travelling along with the natural gas. Early gas lines needed a drip leg for sediment just before the valve. Haven't seen much about drip legs in the last 20 years or so. The intermittent ignition should stay sparking just to establish the flame - then it shuts off after a delay time period. Those parameters are determined by the ignitor manufacturer. I had to replace a white rodgers control on a commercial gas dryer and that had a 90 second purge, with a 15 second spark time. Lockout was 12 seconds after no flame.