My Coleman camping stove (model 9921A700, maybe referred to as 9921?) is having 2 issues. This is an early 2000-era stove but I still use it, particularly more so recently than in prior years as I am doing more camping now. It's in great shape so hopefully can keep it operating well. First issue - I was in the middle of boiling a pot of water when I noticed the flame looked weak and flame was sliding up and around the bottom of the pot. It was odd as only moments before the flame was nice and tight and hot. I swapped in a different propane tank and unseated/reseated the regulator assy but it continued to produce a weaker more wavering flame. Everything else looks fine and is clean including the air inlet orafice up inside the stove. Coleman Support says the R430-565T regulator assembly identified in the manual is discontinued and I am not finding one by that specific part number anywhere online. I see a lot of "5430" regulator parts for sale and wondering if this will still work? It seems like a universal replacement part but not sure. Second issue - admittedly minor... the burner control knobs seem touchy. I can use them to adjust to a desired burner output, but then the flame jumps up a little when I release them. I keep going back and forth a few times adjusting down, they jump up, eventually I find a happy spot and just go with it. My instinct thinks this is just normal behavior from a small, inexpensive knob assembly but thought I'd ask the experts here! But since the stove is maybe 15+ years old so I'm hoping something could be replaced or cleaned or adjusted to get me back to better control? Any help is appreciated!