1) right! but you'll need to own enough mags to make it worth the cost.
2) rarely had to face that, but a screw or anything that can act as a lever always comees in handy in these cases!
3) constant air, straight remote (not coiled ones) and small bottle that fit in a belt pouch: that's the must-have setup!
4) I guess that happens to every TPX (or tiberus, same problem) owner. Now you know. keep it in mind and if you really NEED to actually see your balls, unzip your pants, take a Dremel a drill a rail on the side of the receiver!
You can also remove the translucid plastic craps to have a better view (especially the one on top of the gun, allowing you to see the chamber)!