Chosen Solution

My controller’s right bumper is responding if I push it real hard, but easily if I press closer to the left. Don’t be confused with the right trigger (below right bumper)

These controls are really conductive pads that press against exposed copper traces. I would suspect that the conductive pad has degraded on this particular control. These pads are available as replacement parts. I would suggest that you purchase a replacement part and exchange it. This should resolve the problem. Dan