What do you mean, no K class doubles!

This morning before work, I was skimming thru May/June Narrow Gauge and Short Line Gazette. Reference-Robert's Ramblings.

In it there is a reference that noted narrow gauger, Wayne Lincoln, had once been in the "engineering department for the D&RGW and was responsible for limiting the large K-class 2-8-2s from double heading across Cascade and Lobato trestles on the Cumbres line."

It also has mentions that friend Ward Kimball, of same age, has since passed on. My point to this is that doing math, wayne should be 96 and still kicking as well as living in the L.A. area.

If approachable, could he directly answer the question as to what were the factors leading to his double heading directive? How were his conclusions made? What could he tell us about Cascade and Lobato that we can't answer because we don't fully understand the dated tech.

Just a thought, because these are some of the recent questions that I keep seeing, with the responces that know one knows. Here is a person that could maybe answer some of these, or at least give good insite where we are currently blind.