JackieC,

8-10 drops might be a little too much

You most likely followed the procedures described in the Shop Manual (and used a new seal):
http://chevy.oldcarmanualproject.com/shop/1948_51truck/51ctsm0617.htm
http://chevy.oldcarmanualproject.com/shop/1948_51truck/51ctsm0627.htm

This Tech Tip suggests not to cut the seal ends flush on the block-side - leave them a little "proud" (1/64" protruding at each end).

Wait to see advice from other posters. Maybe Pre '68 Dave will post opinions/suggestions.