It seems all the sudden my 98 uv777bk has ceased to flutter. It has the lopro and the springs havent been changed. Checked the contact on the blades and everything seems the same.Trem bushing still tight fitting. Polished up the frets a few weeks back and maybe tightened the claw springs in a few more hairs after new strings. But now the trem seems to have suddenly become stiff but the strings tension feels comfortable. Angle and the trem height at nominal. Maybe my springs need to be changed?