Just a quick question on Davis conversions>
While I am not a real novice at diesel engines, having several PAW's that I am familiar with, I recently picked up a couple of Davis conversion heads for an OS .25 LA and .40 LA. The instruction sheet that came with the heads recommended breaking in the engines (on glow fuel) before replacing the head with the diesel version. Since both of my OS's have never been run, I am wondering if this is really necessary? I can only guess that it has something to do with achieving a good seal between piston and cylinder before replacing the head and using diesel fuel. Am I wrong here?

Thanks...............