This is a new technique since I was last involved. Can someone explain it to me?

Try this link. http://www.hobbytalk.com/bbs1/showthread.php?t=71779 There are many opinions on the subject, but I think the consenses is dead short for stock, you choose for mod. Also is you start doing so don't stop, stay consistate always do it the same way. Do a search within hobby talk, there are many other threads that will be of help to you.

Chad O

thanks Chad. I appreciate it.