Hey Meldon the marines are looking awesome, love the Raider and Stormtalon as well.
I didn't really notice the grey patches on the Chaplain until they were pointed out, but I know what you mean about an effect that is subtle IRL, but looks more pronounced in the marco eye of a camera.
In regards to people gluing the sponsons of a Raider to the back. It's how GW do it. I looked it up and sure enough the Land Raider and LR Crusader on the GW website both have their sponsons to the rear (and these -are- the Studio models at that) whilst the Redeemer, in Salamaders colours (and the model chosen for the 360 degree display) has its sponsons to the front.
From a logical side my brain says 'put the sponsons to the front so your Lascannons don't shoot your own Terminators', my eyes say 'but GW has modelled it like this on their Studio model, shouldn't I do it the same' and gaming side of me is saying 'Well if I put the sponsons at the front, I have an additional inch, compared to if it had been at the back'
Originally Posted by http://www.games-workshop.com/gws/catalog/productDetail.jsp?catId=cat440276a&prodId=prod1080 114
"This large 101-piece kit can be assembled with the twin-linked lascannon sponsons towards the front or the back of the vehicle"
The Crusader/Redeemer kit details don't say this, but picture speak louder than words... http://www.games-workshop.com/gws/ca...Id=prod1560025
Back on topic however,
Your Ultramarines are looking fantastic and I look forward to seeing what else you come up with for them mate.