Anybody else having trouble with cata's, or g,dg,xging equips?

Example when i use a g 10 manuel it says minimum success rate 5.25
i currently have level 1 of master refiner which adds 5 so shouldn't it say 10 on minimum success rate?? When i plug in cata's that are suppose to give 25pts i get 4.25??? pink diamonds at 5.25? If you use 5 25pts cata's that should be 100% i thought. My brain is melting any help would be greatly appreciated.