anybody experienced that problem? I got a leak at the top of the control head. I saw in an other thread that someone replace it at the dealer $2000 it's a lot of $$$$. I'm thinking of using lucas rack and pinion stop leak first, but I'm afraid that will damage the pump. I think that I have to replace the rack and pinion or may be just replace the control head (the top seal is leaking). did someone have change that part DIY. is it possible to rebuild it with the seal kit that they are selling. thanks for suggestion.