If there is movement up-down with the crankshaft, you have serious issues :idea: There has to be a clean section on the snout of the crank somewhere. Put your dial indicator there and try you test again. You don't have to have a perfect mounting point for your dial indicator. As long as your base is secure, your test will work. If you still think it's bent, take it to a machine shop and they can throw it on a machine and tell you right away 8)