Good news. I replaced the pull-pull with DuBro 256 cable and added three chunks of lead to the front. Vast improvement. Put 6 flights on it yesterday
Side Note: When I pulled out the pre-installed cables, one of them had a double kink in it. This almost certainly added to the centering problem I was having with the elevator. I suggest anyone getting one checks the cables for free and easy sliding before using them.
Regards,
Craig.