I also only had RadioShack for parts, so I'm kinda guessing you got the same ones I did, considering they only have 1 type of IR LED.
I started with a 1 point system and 30ohm resistor with 3.0v Batt supply if my memory serves me and WoW ! .... IL2 just took on a whole new life !!!
Even went and bought myself an X52 system to go with the freeview stuff
Anyways, my point was ... don't file down the tops of those babies till you test them out. I'm running on a COPY Wii (Shiro) Remote for a cam and I cant get the damn LED's to disappear for want of turning my head. It MAY be different slightly for the cam operation though ,,, will be interesting to see :-)
Good Luck and welcome to hours of fun