I noticed a weird thing on my bass, the saddle grooves are "V"-shaped. I'm thinking that the nut grooves are filed round, to the shape of the string, but the saddle isn't, and this could cause the vibration not to transfer so well through the bridge, and I'm having sustain problems. Actually, the grooves on the saddle are more shaped like "oo", the string going on top of the two o's. And the strings touch the saddles in two points, and I'm thinking the strings should have more area against the saddle. How should the saddle grooves be shaped? I tried to search a previous thread of this but couldn't find one..