Its difficult to diagnose the whine you hear from a forum. There will always be some whine from the sub-trans and trans due to the way the gears are machined. However, with 8000 miles, the whine could be something else entirely.
Start with changing the subtrans oil.
Honda recommends using engine oil in the sub-trans. Not sure why...
Some folks have greatly minimized, but not entirely eliminated, the whine by using gear oil in the sub-trans. It has an additive package more suited to the gears within the subtrans.
Try these threads for more information:
trans noise | Honda Talon Forum (talonsxsforum.com)
Sub transmission oil | Honda Talon Forum (talonsxsforum.com)