Using CapsLock as left mouse button; mostly works but fails with a few things

Linux System Info: OS: GNU/Linux x86_64 Kernel: 3.13.0-24-generic Distro: Linux Mint 17 Qiana, Cinnamon 64-bit 2.2.16 [Based On: Ubuntu 14.04.5 LTS, Trusty Tahr] Due to a disability (spinal injury) which includes finger impairment, I have made some alterations so that I can use my keyboard's CapsLock key as my left mouse button. NumLock is remapped to function as CapsLock. Almost everything works fine when using CapsLock as a left-click and left-double-click but a few things, listed below, do not... **EDIT 2019-01-10** The rest of a long post has been deleted - see my answer below for how to set up the CapsLock key to act as a left mouse button with NumLock remapped to function as CapsLock.