Joe, if you do a search just by putting in the name Ackermon you will find a thread devoted to it. Go look it up. Most modelers have been setting up pull/pull without ever hearing the name and it has worked out great without any problems. A couple months ago there was an article in RC Report on how to install the pull/pull system with photos and some light math, very good article and not a lot of thinking to it. Go take a look at the thread here on RCU. No reason to go through it all again.