Okay, even though I haven't finished my knocked-out hetzer diorama, I just received the Verlinden Resin Base "Railroad Crossing" where I am going to do an EAST-MEETS-WEST scene with Russians and Americans..... It will be my first use of a resin base, so my MAIN question is after I prime the base, should I wash it first (with raw umber) before I start painting it and then wash it AGAIN afterwards???? any other tips for resin bases you guys could give me would be great...........