Because the symptoms changed would guess it's a bad joint on a IC chip.
If it was to a specific light that circuit would be more likely.
Hind sight will be 20/20 on this one.
Start looking for a deal on a replacement cluster, if you don't DIY at tech will need a couple of hours to do whole board. Got my cluster for about $125.
Tech charge will be in that area with no guarantees of a fix.
practice then go for it.