Hi all, I'm in definite need of opinions. Thanks in advance. I have a 1/2 size Wilfer ply with a 39.5 string length. Right now it has Helicore hybrid mediums on it and it's flappy and unfocused. The bass has been set up by a really fine luthier. I like pretty low action which is how it's set up. I play primarily jazz and bluegrass, almost always with an amp. The E and A just drop off the map compared to the D and G. I'd be happier with a much higher tension than the heli's. They just don't have any growl or real swell to the tone. Is it possible that because of the shorter string length I should go to a heavier gauge? I don't feel like the heli's are getting the top moving and if I really dig in they wash out. I guess that about covers it. Any suggestions are greatly appreciated. I should also add that I think the heli's that are on there are 3/4, which probably is even lower tension with a 39.5 string length to begin with.