They did not come up on my similar google search (to Richard’s).
Jenny Bulstrode’s paper is published. We are unlikely to get her to retract it.
The equipment from Reeder’s foundry came to England later than John Cort’s Abby. Is there any chance of working out what ships were in the convoy when it was shipped? Unless there were goods to be shipped by the Navy, it is likely that hired transport ships returned with a cargo of sugar if they could. Unfortunately port books for west coast ports in the late 18th century either do not survive or are in unlisted boxes of TNA, E 190.