I highly recommend Karl Ehlers (edit: but he is in Washington, as near as your local post office.) At any rate, if you want a long-term fix you should use a Rollei expert, who will fully break down the camera into individual parts, clean, and lubricate properly. This will very likely be more than $100, but not too much more. However, if the transport needs an overhaul, you will be closer to $200. In my experience, the cheap fix on this camera is not worth it—too expensive.
kgehlers3 AT verizon DOT net