I have my Rebop 5 tuned down a whole step and ordered a custom set of D'Addarrio nickels from Bassstringsonline.com. I am using a .145 as my B string, a .110 as my E string, .85 as my A string, .60 as my D string, and a .50 as my G string. Anything less than the .145 and the B string would get a bit too floppy for my taste and also realize you will need to file down the nut a bit to accommodate the larger string.
Did you have to file out the bridge to fit the .145?
