On another note, a very overly upright position can put extra pressure on the tailbone, and can cause that pain too. In an effort to take pressure off of my stokers hands and wrist, we had moved her to a more upright position. This caused more issue for her than helped. We really took the time last year and focused on her fit and position. Made huge improvements. So much so that she decided in August to tackle her first century the beginning of September. First interest in 10 years of tandeming to try a century.