When I say "sloppy" and ugly fit and finish this is what I am referring to:
front of pad (looks fine, pretty close to H&H)
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back of pad (notice the relief cut at the front) and the gap which on H&H conversions was much closer fitted
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rear pad (notice the top of the rear pad was undercut compared to the top of the receiver rail during fitting of the elevation of the rings)
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This rifle is 71L0630 which was good enough to be re-incarnated as an L42A1
Obviously the rear pad top height is a product of fitting the rear elevation interface of the rings. As I said my 1943 50L is above the receiver height, while my 71L is below (or vice versa).
My theory is that the jigs and system that LB was using to fit the rings was (substantially?) different from that used at H&H.