These really aren't that hard to troubleshoot/fix, until you start trying to reinvent them with creative wiring. "Jiggling" wires is not part of a good trouble shooting plan either. When you get serious about finding the problem and fixing it, a test light or voltmeter, and just a very basic understanding of electricity are your best ammo to bring to this battle.
If the gas valve is opening, the control board has told it to do that, and the ignition sequence should have started at the same time. If that's not the case, and the igniter seems to be in good condition (not all covered in soot or rust), you module is in question. Most servicing dealers (or a mobile tech) can check them in about 2 minutes.
In that same vein, the only way that board was able to open the gas valve, was because the t-stats were telling it to - which means they (the t-stats) are fine.
1997 37' HR Endeavor, 275hp Cat, Freightliner
03 CR-V Blue Ox, Ready Brake