I have a gwg1000 mudmaster and would like to change the original resin bezel with another one to protect the original one from wear and tear.Is it easy to replace it by myself?Also when i disassemble the bezel,what will be the material of the case of the watch under the bezel? Is it stainless case like the frogman or some sort of plastic case?I think since this is the mudmaster that supposed to be the toughest g shock so it should have a steel case underside.I am guessing.