It became evident shortly after the new style primary was launched in '06/'07 that the new cheapo compensator wasn't up to the task. And that was with the standard engines; with the added cranking compression and low speed torque of the 110's it became very obvious immediately. But in typical Harley fashion, they would not admit to a problem but instead came up with the SE compensator that they could sell for additional profit.
As much as it ticks me off to have to pay extra to fix the manufacturer's mistakes, when anyone asks my opinion I still recommend that they upgrade to the SE version. I'd still ask H-D to pick up the tab, but from what I've heard they put a stop to their reps paying for the difference after the size of the problem became more evident. With Harley it seems it's never about just doing the right thing, it's more about ducking responsibility and saving a buck.
Funny how the old style compensator managed to hold up to all sorts of hot rodding over the years with nary a whimper, but the new stuff can't even stand up to a stock powertrain.
Jerry