Stuck with outland engineering

hello I’m stuck at lv 74 outland engineering every item I can make is green and after spending 30k g on mats to make 15 green items and I still can’t level up 1 effing point what do I do?

I am afraid that you have to keep making the green things until you get the last point. I went through this with my hunter and found no yellow recipes near the end.

I just spent 4k more gold and got it up to 75. thanks man.