[Arran]

I think that taking either the chassis, or speaker out, or both, and shipping and shipping the cabinet seperately may be the best way to stay under the limit. I have a 1936 116 chassis and that weighs roughly 40 pounds alone, it only has 12 tubes but the 37-116 has 15 and an RF sub chassis, how much this adds to the weight I don't know but it would have to be at least an extra 5 to 10 pounds over the older 116s. I would take the chassis out and pack that up seperately if it were mine, or better yet pick it up in person. Since the cabinet is going by bus ship the chassis the same way, there is less handling involved if it goes by bus then by any of the courier companies.
Regards
Arran