I've been tuning down a whole step on my 4-string jazz bass and wonder if anyone has found some good strings for this. I like nickel roundwound and would think that gauges somewhere in the .050 - .110 might work, or maybe heavier. The lowrider .045-.100 set I have on there now is just too loose. I don't mind 'em a little floppy but it's got to be tighter than this for me. Any recommendations?