As the title says. I have been curious to try heavy gauge on my DP custom 4 string. I ordered the DR sunbeams nickel coated in heavy gauge from bso. I installed last night, doing a 1/4 turn tightening on the truss rod, keeping the relief the same as it was with the medium Dunlop nickel brights. The action, playability, and tone have improved markedly. Really, couldn't be happier, exceeded my already high expectations. Punchy, bassy, great sustain, great feel on the fretting and plucking hand, sound great with a pick, very even across each string. The strings are 50-110, 4 string set. My question is about the increased tension. The bass is dual carbon fiber reinforced, 3 piece maple laminate, and DP necks are not tiny. They have some heft. Should there be any concern with the increased tension long term? Am I correct that most flats have a higher tension than heavy rounds? I am in love with these strings, and can't see going back to med's on this bass.