Hi, in an index I have, the next instalment for Rob Roy after 3134 is in 3138, page 264, in which is, setting of the valves, fitting of steam and exhaust pipes. Super heater connections, easy removal, suction pipe union.
The only mention I've found of a page 716, is in vol 125, 3132, page 89, which is about an error on drawing on page 716, vol 124.
Regards Nick.