i'm using trinity 4 puck with 4g93 g/b b4 swap back to 4g91 g/b wif exedy organic clutch plate. i'm using it almost a yr and facing same prob wif u la FoarGeez. b4 install organic plate to my 4g91 g/b, i surface back my flywheel because trinity 4 puck also makan flywheel badly la. the vrrr....vrr... sound, may be u need to check wif g/b specialist. i think g/b bearing already nk kondem tu...... take an action b4 it cost u much.......