TR problems weren't much mentioned in my UK PPL (as far as I remember) certainly never taught, but I was subsequently taught TR jams when I asked in NZ.
Theory, I understand. Recognise the difference between loss of TR & of control? - yes. Recommended procs - R22 FM only mentions loss of TR thrust, not jams, but what I was taught for jams works as far as I got to try - I'd like to be able to practice to the touchdown and run-on. Know enough and practiced enough? If I have time to work out what's happened and actively think about it, so I guess that's a 'could do with more practice'. Confident to deal with a TR jam? - errrrrr, yes, moderately, in flight or hover, but not on take-off or landing.