So while cleaning out the camping cupboard, I came across a svea 123R that I haven't used for a couple of decades. I decided to rebuild it, using BernieDawg's youtube videos. I also replaced the fuel seal. It works, but takes about 12 minutes to boil 1L of water (air temp 15 deg C, almost no wind). It seems to be a bit inconsistent in heat output (judging by the noise - it seems to sometimes sound faster, sometimes slower). Any ideas on what I can do to speed it up? There's also a tiny bit of flame leaking out from the adjustment tap - is this just a matter of tightening the nut in a bit more to deform the graphite collar? Also, does the pip need replacing (i.e. how important is it to replace it)? I don't have the penta-key to remove it; if the original rubber in the pip has hardened up, will it still function as intended? What's the failure mode of the pip when the rubber has aged?