You can still learn it, even if I don't use tapping for the class. I'm 50-50 on whether to tap the bottom flange of the reactor, (as pictured in the prototype) or go a different route. I'll send you a private message with bit and tap sizes, so nobody will skim this thread and run out and buy them.
For the same reason, I'm gonna edit out the part numbers for the bits that weren't spiral upcut flush trim bits - just so nobody skims the thread and gets the wrong part.