Gentlemen, for your consideration, another instruction mystery regarding vertical stantions[ C1-9 that fit in/around corners of upper well.
Step #67 shows them inside well, #82 outside. By #84 we're back inside.
This is why with some steps you need to jump ahead and see the interplay as to future instillations so you're not ripping stuff out.
Since I now have built chain pump housings I realized C1-9 final placement is coordinated with final mounting of the chain pumps. Their handles pass through fittings on C1-9 and further on and all needs coordination to insure handles run straight, end to end. No detailed explanation but once you get to #84,#85 it gets obvious and several parts come into play.
Lastly, yo need to make very slight adjustments to C1-9 mortices since, once again they're captured by two levels of beams.
Simply make sure plenty of dry fitting gets you there.
Tim