Im having a regulator problem that perhaps someone can help me with. Ive got old victor regs on my oxy and acetylene. Just today, the acetylene regulator started making a pulsing sound like it wasn't letting the fuel out at a consistent rate. It "pulses" every second or so....psst, psst, psst, psst when my torch fuel valve is on. When ive got the torch lit, i can see the flame pulse a little each time as well, so the regulator is clearly letting out little bursts of fuel at a time. Also, when I ramp up the psi, the needle doesnt ramp up evenly, it jumps about 4psi at a time as im turning the valve, with a little psst sound at each jump. I also noticed that, even with the fuel valve on my torch turned up all the way, it still isnt high enough to get past the smoke. When I first noticed this, i thought it might be the torch as its a loaner from the shop but now im thinking it probably has to do with my regulator. Obviously something isnt right but im wondering if you know what it is and if there might be an easy fix instead of having to send my regs in for a few weeks to get rebuilt.

Many thanks.