Ive been pouring beavers and they keep on coming out hollow. Any sugestions?

i would do a search because ive posted about this and got some good replies.  ive been pouring almost to the top in a slow-steady stream and then stopping jsut before the top.  after waiting awhile i top it off and this has in large part cured my problem with senkos.  make sure your plasic is mixed thouroughly and is very smooth and it should help it to pour smoothly and avoid air pockets.

matt