The A17 isn’t that busy in the winter and runs fairly regularly and until quite late in the day. Thinking about it are the Solos ordered of a size that can fit into Mousehole? Presumably not as none are ordered with that route in mind. The A17 doesn’t need the smallest versions and the rest of the order are for services 22/50/51 which should be okay going down to Portloe regardless of model. A Dart and E200MMC will get down there (just)! I have not seen a confirmed list of Solo versions due and whether any will get into Mousehole but it will be interesting to find out.