The two different hip problems are major, effecting mobility in the case of the big ratchet and transformation in the case of both.
The tail fault (which I suspect I have) is manageable. As Nemesis the leg pegs hold it in position. As the base it lies straight on the ground. If standing upright, it bends and rests on the ground. If leaning forward gravity holds it straight. The only time it becomes a real issue is if Trypticon wants to lean forward with the tail raised. Not going there.