Nope, sorry. The cube size is controlled by witch evaporator is installed in the machine. And the cost of chaging it would come to more than 50% of new machine cost. Let alone it would destroy any warranty you have. Contact the seller and see if you can trade it in.Â
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Besides, you did not purchase a BG. Manitowoc only made BY, BD, and BR machines in the 200 pound B cubers BY are a 1/4 dice. BD are 1/2 dice and the BR is a square cube as well as the biggest. If you had opened it up, read the manual, and sanitized it yhou would have seen how the evaporator plate is made. A smaller dice plate would have the vertical bars silver brazed on in a different width.