right i am taking my head to hill power on saturday to be cleaned up and skimmed ready to put to my megane bottom end ,i have just been on bb tunings site and they are offering head gasket,manifold gaskets,cam.cover gaskets cam oil seals and valve stem oil seals for 50 is it worth getting and would you do it before or after hillpower have cleaned and skimmed it and how hard would it be to do it myself cheers