I recently put a Gotoh floyd rose on my parts mutt guitar to better match the radius of the fretboard than the OFR's. That worked well, but I have less sustain now. The Gotoh is much lighter, so I think that's why. Any recommendations? Do these take those "big blocks" i keep hearing about? I know EVH used a bigger sustain block with his 5150 guitar, which had an OFR. Will the Gotoh floyd fit one of these blocks?