Product review (3 stars): LG doesn't provide clear instruction
The instructions that come with the LP orifice are useless - it didn't match my dryer model. I had to scour the web to find something, forget the LG website - it doesn't have anything related to the conversion.  At first the task seemed daunting, I didn't want to take my brand-new dryer completely apart but after studying the dryer and the additional info I found online it ended up not being that hard.  The hardest part is taking the top of the dryer, you must unscrew the screws on the back, then take a flat-tip screwdriver wrapped in a rag, to avoid marring the finish, and prying up the top. Once you have the top up, you must unscrew a few more screws to take the front panel off, once that's done you can see the venturi on the bottom right. Just unscrew the NG orifice, screw in the LP orifice, screw down the valve screw and put the whole thing back together. Having done it once, I could probably do another one in 15 minutes.