Hey RG, sorry, I'm not familiar with the LSR (why I asked for a pic of it and what you've said (last post) would have been obvious). So I get it now
you've lost from the centre of the nut rollers to the edge of finger board (off the fingerboard) because of the width of the LSR nut thing. Bummer (and I get I don't need to remind you of that
). How to fix then. If you fit a FR locknut (in the "right" place (ie where the front of the nut used to be)) (or a Tusque (but how to make it stay there) the guitar will work. There will be a gap between the "now" end of the board to the front of the nut (this shouldn't be a huge problem, but not ideal). Of these options the FR nut would be best as it is bolted in place. So then there's now a gap from front of the nut to then finger board, do you care ?? (well slightly less vibration transfer so probably yes, a bit..), cosmetically ? can you really see it ? Ok how to fill the gap (with a FR locknut bolted in you don't really need to), inlay rosewood and shape, mix rosewood sanding particles with epoxy and fill gap. The upside, is you don't play/press there, leaving the gap will decrease vibration transfer a little.
To do a normal nut (Tusque or otherwise) you have to fill the gap so they have a fingerboard to press up against.