The newest gakk will really do a number on RP. Most likely your pills weren't cleaned to rid the gakk.
The orange 2 gakk is also a yeild killer and overall fuck a bee in the end type gakk, that is hard to spot pre-rxn, but is a killer in the post rxn. This could explain your 20% yeild loss. NP washes of the post-rxn fluid help, but will not rid the orange 2 gakk.
How were your pills cleaned? What were the inactives? These must be known to help other bees help U with U're situation.
Swim has seen RP reduced to this more than once by so called local cooks Ibee has come to know as Wareami referrs to as "GUP"chuckers (i.e.ground up pill chuckers, cooks whom just throw in the whole shebang rather than using an up to date pill cleaning method.)
The RP is most likely trash.
Next time try with clean feedstock. Clean in=clean out in RP/I reaction.
Good luck in the future.!!!!!
These are just guesses trying to point u in the right direction, but swim wouldn't use the RP again!
Hope swim could help