Hi, shogon. Welcome! Glad you like the Triton.
Just to be clear, we're talking about the regular 900mAh batter (not the VV).
All of the Triton Regular batteries should put out the same voltage, based on their Lithium Ion technology. Someone with a G6 and a voltmeter can verify this, but ALL should be the same curve, from the smallest G6 to the 1300.
The first 5 to 10 hits are a higher voltage, but it levels off after that and runs from about 3.9 to 3.7 until the last 5% of the discharge, which falls off a lot. There was a cool chart BigBen posted, but I can't locate it at the moment.
What might be happening is coincidence. Are you using the same coils from the orig kit? Have you been cleaning, soaking the coils? Perhaps a dry burn would help, followed by another good rinse. There are other threads here describing this.
It might just be time for another pack of coil heads.
Let us know how you do with it.
And what's your flavors? I am Prime15, and Malibu with a bit of Belgian Cocoa...
And guess what? You are now a Halon!!!!
