Exactly, my smaller home tanks are great but my neutral flame setting
wanders a bit while welding. It tends to a slight oxidizing direction
which isn't as noticeable as a carburizing creep. Right now I
maintain a hint of a feather but would prefer my system would hold
settings for the length of a cluster. With thin stuff it gets a
little harder to weld because of the wandering heat as well.

With the oxy it seems like I can feel the pulsating effect of the
regulators diaghram. I'm probably way off but its like a faint
pulsing action that changes the heat on thin stuff. I'm preparing to
weld real thin coupons for training and heat control is a real skill
with the .025 stuff. I would like to know I can weld thin tubing with
finesse before tackling a fuselage. Besides practicing with an OA
torch is fun. No humming, smoke, and wire spools or rods and thier
toxic fumes and stink. Just fire and liquid steel, one sings the
other smiles when thier happy, my kinda meditation!