The pin problem is well known.
As for the build quality you can see in the picture how the paint is coming off. Next to the mod is the silicone case I've always used with the mod. So I'm guessing the mod gets hot and the paint is chipping off (the case might also be responsible as it may help retain heat). My other mods do not have paint problems; despite the use of silicone cases with them.
Lastly you can see the gap around the battery door is pronounced.
Sent from somewhere in Vietnam.