Hey guys sorry all very new to this! My question is I have a 4 string fender jazz and i've been jamming with a new band and they play songs in drop D, C, and a low AGCF tuning also. I currently have my bass set up for C using .124 as my 'E' string. The guy who set it up said to buy a 5 string string set and use this. Problem i'm having is when i'm now tuning to the low AGCF it goes out of tune quite a lot and it sounds really muddy and no definition in the low notes. Any advise as to what strings I should look into getting?? Thanks a lot guys!