I bought a fretless fender jazz bass from my friend for only 60$!!~!!~!!~!!. he made it fretless, and di a pretty good job on it to. the action is a little high, and it needs to be kinda...idk fixed up a little bit. but i really wanted it, so im gonna fix it up and ****. but like, idk what kinda strings i wanna buy for it. right now i have a fretted fender jazz bass and i have Ernie Ball mediums. idk the numbers. What do you guys reccomend for a fretless jazz bass. light or mediums??~??