Revolution vs. Guts and Glory (Kalmbach Feed)

3 Feed questions:
We are presently feeding the 1/3 1/3 1/3 blend to a market heifer and steer, and a breeding heifer. I am concerned it does not have enough protein? They are going to be in a late august fair. Weighing 500-700 lbs now.

Anyone used either Revolution or Guts and Glory?
I was thinking of using Revolution for the last month before fair on the market animals. Will it effect phenotype negatively?

The guts and glory we were planning on using on feeders and replacement heifers a month or two before fair.

I'm relatively new to cattle but I used Kalmbach feeds for 2 years.  I didn't like 1/3 1/3 1/3 I felt it didn't give my cattle enough grow. They just didn't grow very well on it. Guts and Glory I really liked the results I achieved with it. I believe I used Revolution on my steer and it really helped him get to that final look we needed.

What is Revolution? is it a Kalmbach Feed?

Yes Revolution is a Kalmbach feed. Link is being posted below.

http://www.kalmbachfeeds.com/shopping/Revolution-Show-Supplement-560FOC-P140.aspx