Yes I can explain efficient power levelling for you.......We'll I started at 970. When your gear is even (all gear within 1 level of each other) you do the highest drops available to you. I did the raid. So now you have some of your gear alot higher than the one's that didn't drop, there for raising your average power. Next you spend mats at vendors dropping +0s (gear at your power level) but still higher than your lower pices, keep replacing your low gear with these u till there are no more levels to be gained.You're basically levelling up without burning powerful. Once that happens go and do T1 powerful drops until your gear is even again then do a few more high or pinnacle drops and repeat the process until you either cap out at 1000 or run out of drops to do. I use DIM to check my exact level. Example if I'm 990.8 with a weapon at 989 I can get to 991 by just getting a replacement weapon from +0 vendor or even a blue. Sure it's only 1 power level but if you do it every time in between your powerfuls it soon adds up. I also ran Survival on that character for even more drops. As soon as I had 3x 1000 weapons my second to characters where a breeze to get to 1000 base power slowing me to save all their pinnace drops to go above 1000. I hope this helps you or anyone else who reads it.