The PA will stretch with almost no effort, but the upper portion is going to be, and will always be HELL to stretch. Even after a year it'll suck.
OK, here's what I think you should do:
Wait another 4-6 months to let the new skin toughen up in there.
Then while taking a long HOT bath, lube up an 8g taper and slowly (over 10-20 minutes) insert it.
Make sure you have someone around in case you pass out.
I know that sounds funny, but it happens.
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