I run Plague Marines with 2 DP's and a bunch of PM's in Rhinos with a few Oblits backing them up. I just recently went up against a SM army with Vulkan and a lot of Multimeltas and Lascannons. Pretty much his whole army is twin-linked and I am losing all my mech by turn 3 or 4 if he is rolling bad or I am rolling cover well. I pop smoke and use cover but it isn't helping much. And when my PM are on the ground I am losing them fast since his whole army is AP 1 and 2. He runs 1 LR, 2 Rhinos and 2 Dreads. Now, the one chance I have had is getting all my Rhinos, 2 PM with meltaguns inside, as close to his Mech as I can and get the 2D6 for melta. Other then that I have no idea how I can kill his mech faster. Any ideas?