Like 375 said…did you soak your fibers in trans fluid before installing? I doubt they would suck up a ton, but possibly noticeable.
There is another possibility….. And that is your crank seal on the clutch side has finally shit the bed. When they go, “usually” they will suck trans fluid into the cases and cause your bike to start to run like crap…usually…. Depending how bad the leak is. The other way is it IS possibly for your case to be pressurizing your clutch cover, while the bike is running, causing it to push the fluids out while you’re riding.
Either way, a leakdown test of the engine will show if it is the seal……just make sure when you do the leak down, that you remove the dip stick to ensure it is venting (if the seal is bad) while you’re performing the leak down test.
Remember that A LOT of problems with banshee powertrains can be found with a leakdown tester….then you KNOW the problem before having to guess at the problem…..