NG to LP Conversion Kit

I was happy with how fast the propane conversion kit arrived. Unfortunately, in the process of installing it, I found that I needed another part which was defective. I ordered it from Supply House told it would two weeks which was acceptable after being told that it would close to two months which was not acceptable. After telling me of the two week date, I got another email saying that it was bumped up to Jan 10. This is needed for the heat in an older customers home and that was not acceptable. I called another company this morning and I am getting the part in four days this Friday while being dropped shipped from Wayne when i was told that could not be done.I will not use Supply House again.