Oh, you're one of that lot. You're welcome. :O)
I might scout about a bit and see what paths are going to be okay. Harlaw to Threipmuir should be fine, as should Bavelaw to The Howe IIRC. The road down to to Glencorse is obviously fine, then up to Castlelaw and over the side of Allermuir on the big track there, though the Howden Burn track was pretty eroded as well last time I saw it. If there's a workable way through to Bonaly (which I'm not sure there is) then I could get back to the start via Torduff and Clubbiedean reservoirs.
Hard work some of that but who takes a bike into the hills for an easy life, eh.
Might be more fun to do Harlaw -> Threipmuir -> Bavelaw -> The Howe -> Flotterstone -> couple of pints -> Return by same. Anybody know if the pub is happy to let muddy bikers in?