Well they got it in at the factory... If you've tried every possible position on the crank to try to remove it from the shell then the next is removing the RH cup. It's easy to hit it from the backside/inside the shell with a drift punch or any long narrow solid shafts/rods. These cups are never really well fitted and pop out quickly after a blow or three. Reassembly is with a clamp to press the cup back in. This can be a threaded rod with spacers/washers to pull on the cups or a couple of pieces of wood and a bench vice or C clamp. It will be awkward with the crank in place but very doable in short order. Andy.