I'm really at a loss here. You're using a lot of +hit pieces, poorly itemized ones at that (no reason not to use Pillars of Might if you're a serious tank). Your spec is bad but not skimping on the threat talents. (Skipping Judgements of the Just is unwise, it's a tremendous mitigation talent and should always be taken - don't rely on a co-tank or a DPS (Frost DK for example) to put up this debuff, because what happens if they die or have to run away or something of the sort. Get it yourself.)
The problem is not Paladins in general, our threat generation is fine. It's more likely that the threat issues are a result of bad play - whether it's you personally screwing up the rotation, or whether it's your raid's fault for not MDing, or one of the rogues Tricksing a DPS right off the pull (you likely need that initial threat boost from Tricks - later on they can use it for a DPS boost), or maybe you just have a few idiot DPS who don't spec their threat reduction talents. Maybe a combination of all of them.
I could recommend some band-aid fixes like the Libram of Valiance, but I doubt it would help if there is a serious underlying issue here.