Quoting Jesh:
some noises that sounded like my balance shaft bearings are fried, ...i just replaced my rod bearings less than 1000 miles ago....
You didn't. However you also did not say "I got out my stethescope and isolated the noise to my balance shaft bearings." You said you thought it sounded like those. I brought up the rod bearings because you say you just changed them, and now you have this problem.
Based on your response, I would assume that you did not in fact check your rod ends. This brings me to my next question, which is why did you change them in the first place? Clearly you thought there was something wrong with them, were worried about excessive clearance etc. If you were worried about wear, you should have checked for wear. (Also on the crankshaft journals). Clearly you thought this might have some bearing on the problem, as you mentioned it.
If you had correctly checked both the crank journals and the rod ends, you would not have bothered to post that you had changed the bearings, as you would have no cause for concern.
In addition, loose bearing (any and all bearings) clearances are the only cause of low oil pressure, as the restrictions in your lubrication system are what create pressure. Given that you just changed the rod bearings, and now have low oil pressure, and a noise, it follows that your bearings could be the source of your problem.
Also. If you did not measure the rods and crank, how do you know that your engine did not have a crank that had been ground? You don't. If the crank had been ground, and you put in stock bearings, they would be flapping around in there something terrible, making a noise and causing low oil pressure.
My advice remains accurate. Verify your actual physical oil pressure, and find the source of your noise.