Getting worried-----

Don't you mean 9.6-10.0 Static CR? Not sure how you can get to the level of DCR with 10.5:1 273 pistons unless you have some heads shaved, etc. That level of DCR seems Ok for a large duration, high RPM cam. Others should comment, IMO.

That amount of DCR sounds quite high......OK on the additives. They may well be needed if your DCR is that high. Not sure you are out of the woods on this.....(why I asked for the details. If you are worried, then an open info flow should take place, IMO.)