@rjs987:
I've not encountered a genuine Odysseus in person, so I can't exactly speak to that. The availability of the Terminator trumped my will to obtain a real one (my personal thoughts on clones have ebbed and flowed all year long). So speaking only with the parts in my possession, I can definitively say that you are on the right track, if indeed you like the way my custom MKB center pin works and truly prefer to make it work with your Hercules despite a few technical obsticles. However, you may need to rethink a little:
I just tried to replace my RH Hercules center pin assembly with that of a Terminator V1 (I have no V2). Mine was a no go. The Terminator pin cannot reach the nut inside the Hercules ceramic. This is due to the protrusion of the threaded part on the bottom of the steel ceramic holder of Hercules. I'm referring to where the plastic nut threads on to catch the ground (-) wire. If that where to be taken away, say ground off or cut off, it would probably work out but then you wouldn't be able to go back to the usual Hercules setup.
Instead, you may consider obtaining a Terminator rebuildable assembly in its entirety. They appear to be available at Stormy's still. It stinks to keep throwing money at a mod, I know but it's just like any other hobby. I just confirmed that my Terminator assembly fits into the Hercules basic juice feed without a hitch and the positive post extends the desired length from the base with the GGTS native threads to work with the custom MKB center post. I recommend doubling up the o-ring at the bottom of the Terminator parts, and leave out the locking ring. Doing so causes the Terminator parts to line up more like the Hercules' own parts, allowing proper alignment of the mouthpiece.
There are a couple things to know about setting up the terminator that always need to be said to a newer user: Capture the positive wire with the O-rings, not the steel nut and getting the negative connection without using the lock ring takes some practice. I use AWG30 nickle for my non-resistive legs and simply coil the negative leg until it fills up that channel of the ceramic. When the whole assembly is installed in the base. I then use a very small screw driver to bunch the coiled negative leg to ensure that it has total contact with the steel body of the atomizer. This is probably all easier with a Terminator V2 rebuildable assembly, but as I mentioned I don't have one and have no will to get one. The Terminator V1's work out really well for me.
In my opinion the Hercules dual-coil/dual-channel bit is a tad over rated and I find the airflow to be too restricted. Indeed it's able to wick better than a stock Terminator V1, but I have modded my ceramics according to the wise words of @dwcraig1 and find the resulting wicking to be better than what I'm experiencing on the Hercules. Specifically, I use a dremel tool to grind out the side channels of the Terminator ceramics. I also wick according to the Mr. Krinkle method. I've followed many trends while vaping, but for me not everything was a good idea. Sub-ohm vaping, and dual coils in general haven't gotten me to a more pleasurable experience. For a few fruity flavors a dual coil seems better, but this can still be achieved with a single channel using the Highlander method.
I'm locked in a routine now using AWG32 Kanthal single micro coil at 1.6Ohms and 4 strands of cotton yarn. In my experience, doing everything I could to reduce volt drop on the mech (ie~ brass shim, custom center post, and no battery spring) did more for the vape than getting all crazy with low ohm's.
Cloud chasing was fun for tinkering in the past, but with my simple setup I still have to put the mod down to keep from getting nic'd out at 6mg, and have to open a window in my large living room when the wife & are enjoying a movie else the TV becomes hard to see. Flavor is as strong as it will ever be, and my analog smoking classmates still open eyes wide and say "holy s(you know what)" when we're enjoying our individual stogies in the school parking lot.
Hope this helps, and don't give up so long as you're having fun.