When sneaking up on an active eldar tank that was still, I hit it with a fully charge power fist at it's rear, and..... Nothing happened, contact was made, there was a spark, but nothing happened to it at all. Later, I hit it again with a charged power-fist to it's front right, and it glided over my fist and was above me, before it landed on me I charged a second shot, released it under it belly, nothing happened. It then ran me over. Please fix.