New member here. I just purchased a SL8-1 at a local pawn shop for $800. The gun is in excellent condition. I am not crazy about the grey color so I decided to dye it last night. I mixed 5 parts black dye with 1 part yellow in 4 gallons of water. I used Rit powdered dye. I brought the water just shy of boiling added the dye and submerged the parts. I left them overnight. This morning I removed the pieces and the handguard and housing look terrific. The stock, butt plate, and mag well did not take at all. I prepared all pieces the same. I cleaned them with laquer thinner before submerging. All 3 pieces look like the same material as the other and it is all factory H&K. Any suggestions?