I have a Holland Companion Grill and it's for LPG only-the Holland company says to not convert it to natural gas. Ive read somewhere on the internet that its been done, the orifices do scew out. Has anyone one here drilled out the orifice? I'm thinking of doing that or taking it to an LPG supplier and having them convert it if no one can refer me to the how-to-do instructions.