I think you are blaming the the strings for your lack of funkiness,its frustration,keep at it and you will be a funky player,there is no magic formula,just enjoy your music,you really dont need to change your strings.From your previous threads you seem to think phrasing is very important,raw feel is far more important than all these learn to be a funky bass player tags.
If you really want to be a funk bass player Anne Marie,you will seek out, listen to modern/old/rare soul and jazz and funk constantly,i firmly believe that you must actually be obsessed with this type of music to play it well(sorry but punk will have to take a back seat) This is what cuts it jobwise for a "funk" bass player.If you want a quick fix impro wise just play in dorian or mixolydian when you practice noodling at home you may come across a good funky pattern you can use.You must be actually into this genre of music to play it though.Sorry but knowing a couple of sly stone or james brown/jamiroquai/herbie hancock bass licks wont cut it! you have to be really into this type of music,look for rare stuff and get your finger ends like hard hitting pads.Boil the strings sweaty betty! Turning black eh? watch it doesnt drop off!