If using the +1.5mm ballstuds on the LOWER side of the hubs...make sure you readjust your Ride height back to normal (will be 1.5mm lower without) AND Downstops settings 1.5mm LOWER to get the same droop as before

ie I had to put 2mm spacers under my droop blocks, and added 0.5mm to all my original downstop settings to get the same droop settings