WTB: BA11-K Rack Rails

Like the lower picture: http://gunkies.org/wiki/BA11-K_mounting_box there? I'm guessing that's zinc-plated steel. Alas, I don't know who made those (may have been DEC themselves), or a source for them. _But_.... I have some Chassis Trak outers which are almost compatible. (I say 'outers', but actually many slide sets are 3-part; there's an outer which bolts to the rack, an inner which bolts to the mounting box. and then a third piece, a 'middle' I guess we can call them. Sometimes the middle and outer can be separated, with a safety latch you have to release - but I think I recall seeing one set where you can't extract the middle mrom the outer - at least not out the front.) Anyway, the silver inners do fit into the track in the middles of those CT units - all except the two wheels at the inside end of the inners! Too bad, because I have no use for these outers, and would be happy to hand them over to you. The other possibilithy is that I _might_ have a spare set of the silver outers. I have 2 sets of the outers (2 left, 2 right), 4 of the special pivot bolts - but only one set of inners - at least that I can quickly find. Let me have a look around, and see if I'm really missing the inners - if so. I might be up for trading you a set of outers for something I can use. Noel