Geiger

I am trying to use the Special Mode: Mold to print a mold for my model. The feature works as intended, except for the top of the model; instead of following the set Mold Roof Height, it cuts off right at the top of the model so that the final layers of the model actually protrude through the mold shell. This doesn't allow for any room for the molding medium (silicone in this case) to cover the model's tip. Attached is a pic of this and my model settings. Is there a way to make the top of the mold extend past this point? Likewise, is there a way to print ONLY the mold shell? The inner model has already been printed and sanded/vapor finished. If not, both of these features would be extremely handy for creating glove molds & their mother molds.