Hey, I tried to put my Sony FS7 on my M5 with the Canon 50mm. Its not so bad (for simple movement, travelling ...). Did anyone tried before ? Do you think it can damage my MoVi ? Here is the link to watch the Test :
The FS7 body without battery weighs 4.4 lb / 2.0 kg. So I guess you did surpass the 5 lbs payload. If I were you I'd check the total weight of the FS7 in this configuration.