Update: After a few heated e-mails, phone calls, some text messages, PAR has sent new gearing and parts. With the trans dissected, AndrewTech made a diagnosis that due to the off slide pin (it had some imperfections and was not lining up correctly), I was actually hitting 2nd gear synchro and that is the probable cause for the grind I was experiencing. All new parts are in, and they have assured me the issue is fixed, and the trans shifts like butter. I am picking it up later this week so will report back.
2007 WRX TR | Stage 2 | PAR Gearset (Built by AndrewTech)