Typically the best lesson though, won't be easily forgotten. I thought I had the same issue back in the fall, turned out to be the clip that holds the plastic shield broke and jammed the blades. Dodged a bullet on that one. There is a specific method to putting it in, there is lots of info available online on it so make sure you read up on it.
S52|ZF|TRM Coilovers 670/895|Staggered 18" 5's