Thanks... So you wouldnt be afraid to use Momentum on heifers and/or Maine influenced (Hard Drive, Ali, Classic) cattle? Wont get too tall? I was told to use on some Ohlde bred (Griswold) cows I had, but I do not want to get into some altitude (tall) problems....The set of cows I was considering above were some New Design 036 X SAF Mademoiselle daughters. I am looking for some consistancy in my calves with a Chi kicker before I start breeding up my maine blood. More power while staying clean......I am not into managing TH/PHA...