Having to go back to solos because I did not get enough parts needed after running just one solo last night and today I cannot complete the solos on a heroic geared lvl 120 fury, she is constantly out of mana from trash mobs and it kills my merc. I made sure the fount of power buff was running. And while I'm at it I will also mention that its SO annoying that you cannot get all the parts needed in one run of a solo. Disappointed.
I'm having the same problems, and yes its extremely annoying that you can't collect all needed items in one run. No reason for it.