Did that. The (electrical) tape made it worse. The tape is soft and can get crushed. At this point I am just living with it. I am about ready to do the yearly-ish cable replacement. I can cut the rear housing a bit longer, I think this is also exacerbating the problem as the rear housing may not be hitting the rear cable guide at the right angle.

I am at the point where I just need to start over and have been too lazy to do it. Oh, and now racing is picking up so I don't know when I can get it done. Ah, the life of a procrastinator.