there's a few GT Advanced machines that do not have the 4th and 5th tier machines listed in NEI...
Some of the 4th and 5th tier machines are named differently. If you search using the tooltip of the lower tier machines, you can find them. For example, the basic macerator has a tooltip of "Schreddering your Ores", so if you search for "Schreddering", you can find the 4th tier is called the Universal Pulverizer and the 5th tier is called the Blend-O-Matic 9001.
hook too many / big of a solar panel and machine blows up (it's getting power)...
There are other things that can cause a machine to blow up, such as rain and lightning (and as I found out the hard way some months ago, setting up your machines in desert or savanna doesn't automatically mean they'll be safe). I suggest you look through http://ftb.gamepedia.com/GregTech_5/Electricity and you can use a debug scanner (or portable scanner if you prefer) on a machine to check if it really has power.
So, i even went as far as to look up ore blocks and give myself new ore blocks... still... nothing... they just sit there... what am i doing wrong? or is there something going on unexplainable?
Perhaps if you were more specific as which ore blocks you're putting in which machines, we could help.