Welcome aboard Russ! I've got many thoughts on your posts here. I'll keep most of them to myself for now though. Suffice it to say that the 110's were never tested properly before they were introduced on the '07 CVO's. As a result, HD now finds that they bit off more than they can chew with them. You must separate normal expected reliability, from performance. Now, HD can't even hit the first mark, even bone stock 65 HP 110's. So forget the performance being the problem.
If HD didn't patent the crap out of everything since the '06 Dynas, we might have alternative solutions to fix them ourselves. Delcron, and the others you mention, do not offer cases for use with '06 Dynas or '07/'08 bikes. So buying an aftermarket performance engine is not an option. Unless you want a Jims, who's in bed with HD, and never got my vote of confidence. So why buy the bike in the first place, and what to do about this?
I love Road Kings, and the '07SERK was the bike for me. We all know that this ain't rocket science. It's no secret that I ride the crap out of my bike. It needs an engine that can support that. That sure ain't a stock 110! But that platform can't support itself, let alone performance mods added to it. So I got ahold of the best quality racing components I could, and had a new 110 motor built with aftermarket internals. I have only 400 miles on it so far, but the sound from it is night and day different than an HD motor. No motor noise, very smooth and free spinning, and feels great so far. This is my attempted solution to get both the reliability I demand and the performance I need.
But there are many here whose riding styles are stated openly, and there's no reason we can't build them up to meet our requirements. Like I said, this ain't friggin' rocket science. But don't blame the owners! HD made junk this time around. And dealing with them on this is like beating your head against the wall. it feels good when you stop!!!

Hoist!
