On med to big tracks the 5 port is right there with the os, the 5 hits harder on the bottom so it's not as linier, it's pretty mean, the 7 port is what alot of guys are switching to that normally ran v spec's, it smooth on bottom but has tons of it, and you can enjoy a coke and chips waiting for it to top out, it pulls forever, both are very good, and reliable.

Eric, yes do that with the lsn.

08 5 ports have this for shimming, as do the 3 and 7
1 alum
1 thick brass
1 thin brass
1 thick brass in box for breakin.