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If you post the log it will be pretty easy to see if your fuel pressure is ok and what your afr was like during boost. Otherwise it's all speculation.
Stock internals will run 8psi (and more) easily with correct tuning, no need to drop compression ratio unless you are planning on chasing huge numbers. You could use this opportunity to build a stronger motor but you wouldn't need to drop c/r.
edit. Log was sent. posted at the same time.
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