I am also riding with Shimano 105's that I purchased from Performance (aka Nashbar). They were pretty easy to use when I first got them and I left them on factory settings. I have since moved my right foot back to the easiest setting and still find them hard to upclip now and then. Getting my right foot clipped back in after a stop is really getting annoying. I need to find something else, I think.
“Experience is simply the name we give our mistakes.”.
~Oscar Wilde
Type One Diabetes
currently using Medtronic MiniMed
Revel 723 with CGMS