The Ledg and Redg ruined the outside linebacker in the 3-4

3-4 is supposed to be on DT with two DEs around it and 2 OLB around them. Now it's 3 DTs with the 2 EDG players surrounding them .... DTs are not DEs, they play different. I liked having more speed in those postions and more stout DTs that could stop the run. Is there anyway This can be fixed?