So I had a engine put in my caddy and ever since then I have had a transmission leak a pretty big one at that. It only leaks when the car is not running and I took it to a shop and from getting it up on a lift and checkng everything out it seems that the Detent (Kickdown) Cable is not sealed right. Apparently it is sealed with Red Gasket Maker and he told me that is where my leak is coming from and since he was going to do the work he suggested that he change the pan gasket, filter and rear seal and put new fluid in it for $295. Do you all think that this is a fair price for the diagnosis?