I tested to print this resonace test cube from http://www.thingiverse.com/thing:8870
As you can see my printer have alot of problems with this. I printed 2 pieces with duplicator 4 and 2 different setting but both are quite bad. If someone will print it for comparison and post a piqture, would make me happy.
Looking forward to it. 
Here it is printed with the current firmware. I printed it with support but I don’t think it was necessary. The little white marks near the bottom are from removing the support. The base is pretty weak because it is only 2 layers thick but that’s how the file is drawn.
Looks a lot better than the one printed by your printer! 
WOW!! Night and day difference… What’s that little mark on the inside corner? Looks like a little blob…
Yeah, it leaves little blobs here and there sometimes but they’re pretty easy to cut off. I’m sure with updates to the software there will be less of those.
Thx alot, that was a really nice print! M200 is very stable!
Yes it is even though I don’t have it on a stable table. I need to get a better table for it.