Okay, so I finally got around to plotting my calculated LBM as measured by cheap calipers against my weight gain.

Do these numbers seem reasonable? The dotted lines are 21 day rolling averages; the points are measurements taken from the scale and the calipers.
It's a three site measurement so I don't expect it's 100% accurate, but I would hope the upward trend is at least reasonable. If I extend the graph backwards it shows my LBM more or less holding steady as I was cutting calories and keeping protein up so, again, that seems reasonable. If the measurement is inaccurate I think the inaccuracy is consistent.
The big green square is the start of the bulk.