I'm used to play with medium gauges strings like 65-85-105-135 Warwick Black Labels on all of my basses (still not big fan of 5 stringers), tuned BEAD and AEAD. My main bass is Epi T-bird Pro and recently I bought an Ibanez '86 RB650. My point is that on the Epi and all of my previously owned basses, the action was a little bit high for me. I took it to a one of the best luthier in the area (because of the little "chineese" gap in the middle on the neck. The guy made his best, the neck is perfect with new medium frets but still the action is far way I want it. On the other hand the Ibanez came with Rotosound 50-70-90-110 standard E and with some small adjustment on the neck relief it became an ideal action instrument. I like the Black Labels, the sound and the feeling is ok for me. They are easy to find too. I found a dealer which could sell me Warwick single strings. My idea is to buy some higher tension strings for both of my basses. I am thinking of 70-90-110-140 and 70-9-110-145 for BEAD (Ibanez) and AEAD (Epiphone) tuning. My only concern is that the tension of such sets is not balanced. After my research in Talkbass and all that different string sets that you use, I'm still not sure that this sets will be fine for my basses and will not harm the necks. I saw the tension charts (D'addario and Circle K) but every brand has different tension (I suppose)... How do you think, are this string sets good for my needs or there will be some problems? I hope this will help me to lower the action. Living in Europe, Warwick is the only brand that I found to be easy and fast shipped to my country.