I play a clevinger EUB which I've had for about one year. Although it is in most respects a very high quality instrument I find that I have to work much too hard to play it as compared to a high quality acoustic double bass (especially close to the nut). It seems somewhat stiff. I changed the original spirocore weichs for Corelli 370s because I was told they are much more pliable, but the improvement is insignificant. The string height at the nut seems fine, and I've lowered the action to the minimum non-buzzing height, but the strings still feel too stiff and rigid. I want to find a way to make the strings feel softer and more pliable. What adjustments can I make? Should I try gut strings? Why does the feeling of tension/pliability differ between two properly setup basses? How can I set up my bass for maximum feeling of pliability? Thanks.