RE: Tuning question.....
Pull the insert first. Easier to do with aluminum than carbon, but it can be done with carbon also. Not too long ago I learned about the "slide hammer" method of removing inserts from carbon arrows--find a drill bit (or something similar--alittle longer/heavier should work better) that just fits inside the shaft. Sling it down the shaft (be careful) so it hammers the insert out.
Aluminum is easy--just heat it a bit and pull the insert.
Never made any sense to me to try to tune the bow to the arrow. Seems like you'd be a lot more limited in what you could do, not to mention not getting the best performance from your bow.
Chad