Welcome GOrwell!
The WT do not preach grace because they are actually preaching salvation by works.
JWs are slaves to the WT and the "works" they dictate.
This verse sums it up true salvation.
Romans 11:6 (English Standard Version)
6 But if it is by grace, it is no longer on the basis of works; otherwise grace would no longer be grace.
And this passage
Romans 4:1-8 (New International Version)
Abraham Justified by Faith
1 What then shall we say that Abraham, our forefather, discovered in this matter? 2 If, in fact, Abraham was justified by works, he had something to boast about—but not before God. 3 What does the Scripture say? "Abraham believed God, and it was credited to him as righteousness." 4 Now when a man works, his wages are not credited to him as a gift, but as an obligation. 5 However, to the man who does not work but trusts God who justifies the wicked, his faith is credited as righteousness. 6 David says the same thing when he speaks of the blessedness of the man to whom God credits righteousness apart from works:
7 "Blessed are they
whose transgressions are forgiven,
whose sins are covered.
8 Blessed is the man
whose sin the Lord will never count against him."
And this
Acts 16:31 (New International Version)
31 They replied, "Believe in the Lord Jesus, and you will be saved—you and your household."
Blessings in Christ,
Stephen