I have a few of these flint strikers

http://www.uen.org/utahlink/tours/loadimg.cgi?p=/tour/14346/14346Striker175x.jpg

I have removed the cup and super-glued the striker to the metal underneath it. Problem is, I just could not make them to ignite anything except alcohol swaps. Even cotton and petroleum jelly, I tried several times without success.

Sparks look OK ( similar to an empty butane lighter), and the striker and sparks are exposed after removing the cup, but still no success.

Any ideas ??