Found this lot on another forum (Westie one)
85GG 4006 DC --- 3.97
85GG 4006 BC --- 3.62
85GG 4006 AC --- 3.38
85GG 4006 FB --- 3.36
87BG 4006 GB --- 3.14
plus this lot:
http://callumw.com/fsocforum/viewtopic.php?p=100105#100105
seem to know what's what
http://www.locostbuilders.co.uk/viewthread.php?tid=19757
G
thanks Mr G, I guess two lots of identical information is better than none.