Having just visited the FR I've a few questions and I wondered if there are any FR volunteers on here who could answer them for me please? Firstly on the Fairlies I assume the valve gear for both halves are interlinked so both go the same way? Does each end have a separate regulator or is there one regulator for both bogies? Is it the same for the Garrett's? Secondly both the FR & WHR have circular signal bards which are either red or yellow with yellow/red lights in them at the top & bottom. What is the meaning of these? Thirdly the gravity slate train. When this runs is it as a normal train i.e with tokens for each section or is it run under engineers possession? If the former I assume a member of station staff exchanges the token with the chief brakeman as loco crews seem to do it during station stops for normal passenger trains. When the deviation was built it broke the continuous downhill run from BF I believe, so where is the summit for the start of gravity operation? Any answers gratefully received.