Shroud run at level for full XP. We short manned it with 10 people only five were melees and none were a barbarian (no barbarian alone makes it impossible according to the noobs) and only one was a fighter. It was a two rounder in part four but other than that and our squishy bard that kept dying it was a flawless run.
So once again open your mind take off the blinders and stop looking for the perfect cookie cutter group of level 18-20's to run the Shroud or any other high end quest. Stop asking for gear to be linked, and stop MY DDOing everyone who hits join on your LFM. Stop looking at the at level LFMs when your on your level 16 toon and join. Instead of waiting for an LFM that says 16-20 so you can be carried thru. Get in and contribute. This stuff isn't that hard it just requires an open mind and some ability to adapt. Just because you've had some completions with an optimal grouop doesn't mean you know anything yet. When you can adapt and overcome a sub perfect group then you're starting to learn.