hey guys i just wanna ask how to enhance INT talis +5 to +6? is it only with refine dye or we need to put ARS 1? as I tried to put them, but couldn't put the ARS on the stone stuff.

And also I wanna ask about how to enhance Walter medal, is it still the same system, like Walter 3 + Walter 3 + Rare Preservation Stone to get Walter 3/4? and can I use Rare Preservation Stone (N) instead of (IM) one? as we know it's cheaper to use the (N) one

Thanks guys really appreciate what information you shared