Which generation of Sola Scriptura are you referring to? SS 1.0 that asserted that all that is necessary for Salvation can be found in Scripture, SS 2.0 that asserts that 100% of the Revealed Word of God is contained in Scripture or SS 3.0 that claims that each individual's own personal interpretation of Scripture is what everyone else must rely on for Salvation?
Sola scriptura (Latin ablative, "by scripture alone") is the doctrine that the Bible contains all knowledge necessary for salvation and holiness. Consequently, sola scriptura demands that only those doctrines are to be admitted or confessed that are found directly within or indirectly by using valid logical deduction or valid deductive reasoning from scripture. However, sola scriptura is not a denial of other authorities governing Christian life and devotion. Rather, it simply demands that all other authorities are subordinate to, and are to be corrected by, the written word of God. (http://en.wikipedia.org/wiki/Sola_scriptura)
No teaching is to believed if it isn’t found in scripture and no “assumptions” will do.
“not to go beyond the things which are written.”
Can we find what they teach in scripture.
“they examined the Scriptures daily whether these things were so,”
Nice try at diversion and deflection though! Surely you weren’t trying to duck the question of where in scripture you find proof of the bodily assumption of Mary. Book, chapter, and verse would be best.