Well....this morning I tested the rear mounts: KB vs stock and confirmed the KB mount is not the issue that prevents me from engaging 2nd gear @high rpm.
So after ruling the KB mount I tackled the clutch pedal travel and that seems to have fixed the issue, will see it this is just a fluke or the culprit has always been the clutch travel.
I was able to complete 5 test runs all within 30 minutes successfully engaging 2nd at 5K+ rpm.
Measured 0-60 times on AP; love this 48F weather.
Stage 2 OTS Map.