Blue Oyster Grow Questions

I am new to growing mushrooms.  I made 10lb blocks of masters mix in unicorn bags and inoculated with a 10% ratio of blue oyster grain spawn and rolled/shook bag to evenly distribute spawn throughout the entire bag.  Bags are stored in a spare room in low to mid 70's temp.  After a week I see very good colonization on only the top quarter of the bag, none on the lower portion of the bag.  I also see a lot of yellowish orange liquid collecting on the colonized portion of the bags.  Is the colored liquid normal or is there a problem with the blocks?  Why is only the top half of the bag colonizing when the spawn was evenly distributed?  Thanks in advance for any advise or explanation.

Eric,

Try cutting little skits and holes, both high and low on the bag to keep its contents from getting soaked and to let the actual mushrooms grow out of the bag.

Good Luck,

Eric