I am pretty sure the Avenger design is borrowed from a Saw or something similar. The partially closed divided transfers were always the one odd thing about this cylinder I never understood. I can only assume they opened up the bottom to try and get better intake flow to the lower transfers, but they wanted to try and retain as much piston stability as they could. Compromise design.Yes I can. Typical transfers and piston of a CG.
Your transfers have a cut out at the bottom.
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Your piston already makes a provision for that with the bottom half+ of the piston missing.
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The typical CG engine needs a hole at the bottom of the transfers for the fresh charge to travel up, whereas the avenger engine doesn't need the hole as the charge will use the gap along side the piston to get to the transfers. HTH.