Hi,
Sorry to hear about the loss, we also had a couple of bikes stolen after riding at Tong. Pretty certain we were followed back too. We actually saw one of the bikes up at Calverley quarry (Just behind the golf club) and chased the guy riding it into the dodgy estate just behind it (At the back of Sainsbury's / Homebase at Greengates). Never managed to get any back though unfortunately. Might be well worth having a cruise round there now & again just to keep an eye out.
(Special tip - If you do see the guys on your bike, don't call the police as they will come flying up the road with the sirens on then slowly walk down into the quarry, allowing the thieving ba*tards plenty of time to escape..............whatever happened to the art of intelligent policing???)
IF you need any more info though, please pm me and i'll be happy to help.