What uv white pastel from Mayhem's did you use? The following is from mayhem's own website:
To keep the nonstaining abilty it must be mixed with Ultra Pure H20, Pastel Ice White, X1 clear or XT-1 clear only. Mixing Nonstaining dyes with any premixed coloured coolants will result in a staining product.
Mayhems non stain dyes contain a biocide that is compatible with Mayhems current range of products (X1, XT1, Pastel, Aurora). They have not been tested on any other manufactured fluids.
Maybe you did not get all of the part two out of your system. Sounds like what has been going on for other users on this site.
Edited by yamaharacer19 - 1/24/16 at 6:11pm