Catholic Catechism II. The Relationship Between Tradition and Sacred Scripture
One common source. . .
80 "Sacred Tradition and Sacred Scripture, then, are bound closely together, and communicate one with the other. For both of them, flowing out from the same divine well-spring, come together in some fashion to form one thing, and move towards the same goal." 40 Each of them makes present and fruitful in the Church the mystery of Christ, who promised to remain with his own "always, to the close of the age".41
. . . two distinct modes of transmission
81 "Sacred Scripture is the speech of God as it is put down in writing under the breath of the Holy Spirit."42
"and [Holy] Tradition transmits in its entirety the Word of God which has been entrusted to the apostles by Christ the Lord and the Holy Spirit. It transmits it to the successors of the apostles so that, enlightened by the Spirit of truth, they may faithfully preserve, expound and spread it abroad by their preaching."43
Vatican 2
It is clear, therefore, that sacred tradition, Sacred Scripture and the teaching authority of the Church, in accord with God's most wise design, are so linked and joined together that one cannot stand without the others, and that all together and each in its own way under the action of the one Holy Spirit contribute effectively to the salvation of souls.
82 As a result the Church, to whom the transmission and interpretation of Revelation is entrusted, "does not derive her certainty about all revealed truths from the holy Scriptures alone. Both Scripture and Tradition must be accepted and honoured with equal sentiments of devotion and reverence."44
The primacy of scripture over tradition is not an authoritative Roman Catholic teaching the church is very clear that the authority of tradition is equal to that of scripture in revelation and authority .
Some may say that prima scriptura is the position of the Catholic church the fact is that the teaching of the Roman Church is that Scripture and Sacred Tradition are equal authorities.
As a former Catholic, do you recall what happened during the Mass, the source of our Christian life? The Church proclaims the Scriptures, always one reading from the Gospel, and 1 or 2 others. We hear the Psalms. Some of the other prayers (Holy, Holy; the Lord's Prayer, etc.) are straight from Scriptures. Now, compare that to how often we discuss "Apostolic Tradition"? Sure, we recite the Creed, a compilation of the Rule of Faith. But do we read from the writings of the Fathers? Do we discuss the Traditions of the Church?
It should be clear from our practice that the Scriptures hold a superior place of honor among the means God has given His Word to us. We recognize ALL of God's Word to mankind, not just Scripture, but we DO hold the Bible to a higher position.
Regards