Bumper Guards for 1968 SS

[RAS68]

I bought some repro bumper guards for my 68 SS both front and back (The old ones had some pits and rust spots). The new ones do NOT fit the bumper profile very well. This car has older repro bumpers from a previous restoration in about 2006. Does anyone make bumper guards that fit the bumper profile better? The ones I recently purchased are Golden Star repros. I would like to other from others in the Restoration section about other brands and/or experience with the repro bumper guards? Thanks.
RAS