I was doing a bit more reading on LDS faith, and I do note in several sources of LDS literature, they do make repeated reference to requiring faith and works for salvation.
2 Nephi 25:23:
23 For we labor diligently to write, to persuade our children, and also our brethren, to believe in Christ, and to be reconciled to God; for we know that it is by grace that we are saved, after all we can do.
Alma 11:37:
37 And I say unto you again that he cannot save them in their sins; for I cannot deny his word, and he hath said that no unclean thing can inherit the kingdom of heaven; therefore, how can ye be saved, except ye inherit the kingdom of heaven? Therefore, ye cannot be saved in your sins.
D&C 1:31-33:
31 For I the Lord cannot look upon sin with the least degree of allowance;
32 Nevertheless, he that repents and does the commandments of the Lord shall be forgiven;
33 And he that repents not, from him shall be taken even the light which he has received; for my Spirit shall not always strive with man, saith the Lord of Hosts.
D&C 82:7,10:
"7 And now, verily I say unto you, I, the Lord, will not lay any sin to your charge; go your ways and sin no more; but unto that soul who sinneth shall the former sins return, saith the Lord your God.
10 I, the Lord, am bound when ye do what I say; but when ye do not what I say, ye have no promise."
That last quote seems to address your ideas about sinning and losing salvation from post #6 better than what it says in Romans 6:23.
So I think I do understand why you as a LDs believe the way you do about works and faith and salvation. But when it comes to salvation and what it says in the bible, I think someone who is christian and doesn't use those other books, the implication of faith versus works is much different.