Thanks for all of the responses! I really appreciate everyone here, though I seem to do more lurking than posting. I do think I'll give it a try, then go to the LBS where I purchased the pedals if I have any issues. I bought the pedals last year when I bought the shoes for spinning classes, but decided not to put them on the bike until I was riding regularly again this spring.

I am determined to be more self-sufficient with small tasks on the bike and elsewhere -- I've been more and more aware of how much I rely on my very handy DH for even small tasks I should be able to do on my own and I don't like it.

Happy riding!