Controversal! Regardless of personal practices, I believe that we should teach explicitly what the Bible teaches. If you tithe, do you give the 1st, 2nd, and 3rd tithe or just 10%? If we give In Accordance to how God has blessed us then we will usually give more than the false teaching of just 10%. Give of the first fruits and give in accordance with your blessings, not just out of your blessings.
Conflicting messages are always sent when we teach one thing and practice another regardless of our motives.