Hi, I think you have your Precursors and your Precedents confused. The 4-4-2T was a tank version of the 4-4-0 Precursor, and the 5'6" 2-4-2T was a tank version of the 2-4-0 Precedent (actually of the Improved Precedent). It was usually referred to as the 5'6" tank, and not the Precursor tank. The 2-4-2 tanks were used on goods turns at various times, so you don't need to stretch a point to use this engine. The 0-6-2T Coal Tank was designed for goods work, but often was used on passenger turns instead, so I think there was a degree of using whatever came to hand on LNWR steam sheds.