I know this reply is incredibly late, but I was having the same problem and just found my solution and thought I’d share it.
This is a basic replication loop being run on a timer by event when an item is grabbed. When I had it set up like this, it worked but would be jittery on the client as if it was trying to set the location multiple times. I fixed this by checking “Reliable” on the multicast custom event. I honestly don’t know if this isn’t the best solution, but it works