I've read most of the thread and can't find what you meaning.Before you guys waste time turning the Reed cage around I would strongly advise reading this thread...
Unfortunately those China two piece cylinder head kits suffer that problem when they get hot they start losing compression through the head gasket I like to use thick copper washers on the head bolts and tighten them down then run it then retighten it until it almost strips. if you notice a...www.pocketbikeplanet.com
also remember that these CAG engines are actually a copy of the Robin Subaru NB411 brush cutter engine my guess is they put the read cage back there number one to save space and allow room for the gas tank and reason number two plenty of lubricant for the crank bearings and connecting rod they weren't worried about cylinder charge efficiency and on a weed eater you don't want an engine that will rev unlimited RPMs and then blow up.
They are out of stock unfortunately