Just put some spacers on the shaft to take up the extra space, the .080 ones that are made for the kingpins work great. Or you can limit the down travel of the shock buy putting them inside the shock body.
The first race with it last month was GREAT. The results were very suprising. We have a very cometitive car. We did find that we needed to add some beef to the front end. In trying to save weight we took too much out of the nose. We have that fixed and I should have the new version of the chassis in my hand about Thursday and get it built that evening.