What are the flaws in the ten kal vachomer arguments in the torah?
This d'var torah discusses kal vachomer arguments in torah:
Rashi is bothered that these two arguments have some sort of flaw. He wants us to realize that this isn’t so difficult, as there are ten instances of kal vachomers in the Torah that have a flaw. He is stressing that despite this flaw, there is indeed some resolution to the argument.
I hadn't previously heard that there were, specifically, ten flawed kal vachomer arguments in torah, at least according to Rashi. As noted in the linked post, two (with their flaws) are:
The brothers arguing for their innocence in the matter of Yosef's stolen goblet: the kal vachomer is: why would they come all this way and then steal? But this doesn't apply to all of the brothers.
Moshe arguing that if even the Israelites won't listen to him, surely Paro won't. But the people didn't listen to Moshe because they were exhausted from their labors, not because of Moshe specifically, and this wouldn't apply to Paro.
Bereishit Rabbah 92:7 lists the other eight kal vachomers that Rashi refers to. What are their flaws? Or am I misunderstanding Rashi and he's not saying there are problems with the other eight?
3.(Numbers 12) "And G-d said to Moses, 'If her father would spit in her face [she would hide from sight for seven days] surely then if the Shekhina rebukes her [she should hide for] fourteen days!"; 4. (Deuteronomy 31) "Indeed while I still live among you, you were rebellious, how much more so after my my death!"; 5. (Jeremiah 12) "If you race with the foot-runners and they exhaust you, surely then, you cannot compete with horses!"; 6. (ibid) "If you are secure only in a tranquil land, you will surely not fare well in the jungle of the Jordan!"; 7. (Samuel I 23) "Behold we are afraid even here in Judah, surely [we will fear them] if we go to Keilah!"; 8. (Proverbs 11) "If the righteous pay [for sin] while on earth, certainly the wicked should expect to!"; 9. (Esther 9) "And the king said to Esther, 'In the capitol city the [Jews destroyed so many] imagine what they have done in my other provinces!" [NOTE: The tenth a fortiori argument seems to be: 10. (Ezekiel 15:5) "If the wood of a grapevine has little use when it is whole, it obviously has no value when it is charred!"]