Hi Everyone, Been reading through the string archives (and some others) and thought I would post a question for all you DB string folks. The collective wisdom of this site is really impressive. I have two uprights. A 100 year old carved top. I have Helicore Hybrids on this and have the action set fairly low. I use this bass mostly for jazz gigs and when I record. I also have a 1942 Kay also set up with the Helicore Hybrids, action a bit higher. I use this bass for outdoor festivals and when I am on the road. Bowing depends on which combo I am in, but is never more than about 10%. I am joining a new group and will soon start touring with them. They play traditional, old style bluegrass. I have tried slapping both of my basses and do not get the results I think I should. I think I need different strings. I plan on keeping the Helicore Hybrids on the carved top and will switch the Kay over to more of a slap string (and raise the action if I must). It seems like gut strings or gut-like strings are the answer. So here is the question. Which string do you think is best for bluegrass/slap on the Kay and how high should the action be (and where exactly is this measured)? Thanks!