I will make a few more this next week-end.
My first one seems to be fine ; I will just have to recut the top of the burner : unevenly cut with small scissors and a bit too high.

The "How to" explanations say to drill the burner tiny holes "vertically", which I did. Maybe yours are not straight and "looking" outside ..?? <img src="/images/graemlins/confused.gif" alt="" />


(next stoves will be perfect : I just bought a Dremel tool ....)