Ok so I just got my motor back from the machine shop for the fourth time and found that first they shaved the tops of some of my buckets to get the right spacing on the intake and exhaust cams (don't know I'm screwed now). Once I got the timing belt on and set I did a leak down test, all of my valves are leaking, you hear the air passing. The leaks are small I losing only 4 to 6% but still the valves shouldn't pass at all right. Any help would be great.
Details:
04 STI EJ257 motor
Brand new EJ 257 short block
ARP head studs
Subaru head askets
Heads where decked
Valve grinder done
New valve guides and seals