If you don't notice any spotting, fungus or cysts and the fish are otherwise acting normally, then your male rams are probably "Displaying". It's a dominance thing that many varieties of male cichlids do. I see it everyday in my tanks. Perfectly healthy dominant males shaking, glancing off rocks and gravel all to intimidate weaker fish. Often times after WC
's fish will exhibit the same behaviors due to slight changes in water chemistry. Hope this helps.