it looks like you have the clear insulation plastic strips in between your vrm and vrm heatsinks. the strips are not for that. they are for the sides of the vrm modules.
also take a closer top down picture of your vrm modules. it looks like you are using 2 of the wrong vrm heatsinks. if the bases of the heatsinks are too wide, they can make contact with parts of the card that shouldn't be in contact with those heatsinks.