Thank you for your response.
Questions:
1. I want the superior quality LED like the one you suggested. Thus since you modified the a flashlight body. Does the larger flashlight allow for better dissipation of heat?
2. I previously ordered a cheap dental headlight off of ebay. The components they had inside included a single lens, LED, and aluminum hosting tube. Was that single lens supposed to be the TIR reflector because it did not appear so? Where is the TIR, is it possible my cheap headlight did not have one?