Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Nice little burner

I brought this little burner trying to use it for slow burner using NG. I unscrewed the whole valve brass part out, and drilled with a really fine drill to make the hole little bigger to let me NG pass through.However, to use with NG, I should add a metal plate to block some of the air intake from side of the brass valve, since NG is different from propane that could expand more in volume. Without block the air intake from the side, the fire could come back to the valve when you have the valve set very low.In general, this is good buner. I am sure it will work great for propane.