Wow! That Ibuprofen must really be helping if you can still ride! Maybe it's not PMR! Have you tried weaning off the Ibuprofen and seeing how you feel? You may not need it or as much anyway. No heart issues I take it.
Fully understand that you don't want to go thru prednisone after having had chemo. It can mess with a lot, bones for certain. I already have osteoporosis so the thought of this drug eating my bones along with all the other side effects, most of which I already have (extreme anxiety, insomnia, borderline BP, tachy, well, every symptom. Next week I will have an ultrasound by the rheum I see (who is leaving medicine next month. She's a good doc, figured she'd go) and "determine" if this is PMR. After labs, of course, which I have to beg for. I feel like, unless you're "connected," you are apt to less than adequate care. It's incredibly mind-boggling to me. I am 100% convinced that age has something to do with it. Once you hit a certain point, it's so pathetically obvious. Thanks for sharing and may you continue, hopefully pain-free to enjoy a wonderful and healthy life doing the things you love.