help with ir lens

[Denson]

Hey everyone I have a 150mw greenie recently I took the cap off to clean the lens. Does anyone know how far the ir lens should be from the clear lens cause I have taken it apart cause the blue ir lens fell off now it won't light a match but smoke will come off the match. Any help??

 

[SerpantSlayer]

Why dont you adjust the lens until the dot is focused at infinity and use a little thread lock