I have an older furnace... multi-position model 40-130... I think 1999 to early 2000's it's a new install and I need to convert to propane... there is a conversion kit but NO instructions and my installer says without the instructions... it seems the kit doesn't fit and I cannot find a number anywhere for assistance... HELP! Frozen in Maine!

The only thing I had to do to mine, an older Goodman, was to change the jets, 4 of them and invert the small slug in the gas valve, under the black cap. One side is marked L, the other N.