I thought they cell out perfectly flush to the shaft. I was useing the FMJ injxtion and the all carbon Injextions both were very easy to install and work with.
Like I said no issues I even have a set of the AC Injextions in the works for a new bow.
One thing I did was get the adapters made by firenok. They just came in a little work to get them on but it allows me to use standard points for tunning. These insert/outserts seem to be awesome going to post some pics for you later.
Gary