So i picked up a selection of gba sp's both 101's with a spare mobo. One however is not as bright even with both on max brightness. The one also has screen shudder at the top its slight and hard to see but its there. So here is my issue, i never noticed this before. But it had a original battery not the aftermarket i recently installed and also it had a different mobo with a possible bad charge port. Do you think either could have caused the system to appear darker and to have a studder> I will attempt to get some photos later but has anyone else had these issues, and do you think turning up the pot just a itty bitty bit would help?