I need to remove the front bumper. It is held in place with some nuts and bolts to gussets that are attached to the frame which are relatively easy to remove. Unfortunately I also need to remove the steel gussets that are attach to the frame as the winch bumper I have bought bolts directly to the frame, no gussets needed. The gussets are held in place by what looks like BIG rivets with no slots and the heads are round on each end and don't allow the use of a wrench of any kind. Any idea how these need to be removed or do they need to be cut away. (if they are indeed big rivets I will have to drill them out I guess) Thanks.