Re: your under-performing stove burner, I think you need to unclog the orifice. The owner's manual says not to use a needle and ream out the orifice - presumably they are worried about increasing its diameter - but especially for those of us that get LPG down in the Caribbean
(with an increased amount of compressor oil
, is my guess), this becomes a commonplace 'adjustment' as the orifice's clogging results in a low flame. I've probably done it once a year on average over the last 8 years.
PM me if you need directions; it's quite simple and I use needle nose pliers to remove the orifice., down inside the burner. Be sure to use a suitably thin needle. The 2nd time you do it, it will take you 3 mins.