My 97 TT has been releasing white smoke every time I start it up, especially when the engine is cold. I found out that it’s my valve seals. Right? What really needs to be done to it? I took it to a shop and they wanted $1500 for it, which includes a change of timing belt also. Is this a reasonable price? I am in the Los Angeles area and is there a good shop that can do this with a reasonable price? Help me guys. Thanks.