Thanks for the replies, guys.
I always make sure the bit is well seated in the collett, the collett is clean, and it's a brand new bit I'm working with.
So - looks like I'm in the market for a replacement. Suggestions (I'm retired and on a limited budget). I like the Bosch 1617, and the Ridgid R29302 writeups, but they're kinda pricey. I use my router almost exclusively mounted in my table. A couple things I think I need: relatively easy height adjustment, good dust collection, and soft start.
Thanks for any help/suggestions.