Recently had a small accident. The top half of my walkbehind got bent bending the linkage to the hydros; keeping one full speed forward and the other full speed backward. I started it and they made a funny noise but then went away. Could having the hydros fully engaged even though there is no fluid movement damage them at all? I am in the process of doing an insurance claim and want to replace as much as possible if there is an inkling of it needing done.