Northern brewer doesn't offer grains in ounces, so you have to buy a whole lb. I'm making the NB cream ale kit. Their kits are set on 75% efficiency, but I've been getting only 70% (only made a couple all grain batches). I plan on going from 1.25 qts/ lb to 1.5. Should this make up the 5%? I ordered an extra lb of the 2-row, but didn't order any more biscuit/honey malt b/c I would have wound up wasting a good bit of the extra lb I would have bought since I don't have a mill and have to buy pre crushed. If I just add the extra 2-rows to bump up the gravity without extra specialty malt, will this throw things off too much?