I have decided to start using HC 110 the goo type for its keeping property. I have read several articles on the use of HC110,and of the different dilutions. Kodak suggest vigorous agitation,of 5 secs at start and then every 30secs. In Greg Mironchuk's article he states that he only agitates at the beginning of development process and once half way through the process.The reason being that to agitate more makes the negs too contrasty. Has anyone got any other thoughts on the subject.