Tenax 7R is Dichloromethane AKA Methylene Chloride in it's latest form.
I believe it used to be a Perchloroethane/Methylene Chloride blend. The older formula was a little more user friendly in that it took a little longer to dry and penetrated just as well.
OLD formula Testors Liquid Plastic Cement was a 70% MIBK (Methyl Iso-Butyl Ketone)/30% MEK (Methyl Ethyl Ketone) blend and worked REALLY well.
New formula Testors Liquid Plastic Cement is JUNK 100% MEK that takes forever to dry and does not bond very well.

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When in doubt, WHACK the GAS and DITCH the brake !!!

Yes, there is such a thing as NORMAL, if you have to ask what is "NORMAL" , you probably aren't !
Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY.
ALL systems are GO for MAYHEM, CHAOS, TURMOIL, FIASCOS, and HAVOC !