I'm updating Ceebee's Highland Valley to TRS19 standards, which includes PBR ground textures, procedural track, TurfFx, Enhanced Interlocking Tower, superelevation, all the bells and whistles. Anyway, here's my question: I'm setting up the signals on the double-track mainline and I'm using Jointed Rail's SL signals, but I'm not certain how many signals, and associative blocks, to put between Greenwood and Lumby. I name my signals to the nearest tenth of a mile, and the last signal in Greenwood, going clockwise around the double-track mainline, is at milepost 99.9 and the first signal in Lumby is at milepost 101.9, so two miles between the two signals. Is that enough distance for one distance signal? Two distant signals? Three? Four?