Colin, yes. Just ride the PC's as much as you can. That IS your running drill! You might find your lower legs need a little "hardening", because you may tend to lift you knees a little higher, so watch for calf-shin discomfort and adjust accordingly. But, I don't know of anything to suggest other than ride the PCs. A couple of years ago, I was able to train through an achilles injury and come out with a PR in a half marathon by simply staying on PC's and not running more than 3-4 miles a week for over a month. Dr. Day kept telling me not to worry, just ride and I'd be OK if my achilles healed. It did, and he was right.

---

Quid quid latine dictum sit altum videtur
(That which is said in Latin sounds profound)