need advice white scum

i have pressure tested if with no los in pressure over a 1 hour period an d my coolant is as full as always the block is a new r3 race block and has been sonic tested and magnafluxed hopefully there is no cracks the engine was never overheated. does the rings have any chance of seating better with this much running on the engine 7 or 8 dyno pulls and about 1500 miles i sure hope so i do not want to pull this for a rering yet.the pistons are16-32 ross and the rings are cr7590-35 total seal