Thanks a lot for this information, thefreeman. In the past I read some people argued with slicing versus chemical dedoming and bla bla bla. It works anyway (and so, my 3000K looking 1mm sliced CRI90 3500K XHP50A certainly makes my SK98 :-) throw a bit further). I still have a bunch of unused CRI90 4000K LH351Ds from AEDe's group buys, so nice to know. 