i must be doing something wrong.... I never get such good results 
i mostly found RV parts lol.
something like this would be my best bet i think, but pointing it upwards in the tube, may prove to be problematic.
http://www.theledlight.com/MicroStar.html

i mostly found RV parts lol.
something like this would be my best bet i think, but pointing it upwards in the tube, may prove to be problematic.
http://www.theledlight.com/MicroStar.html