Some of these did have a modified rear cover with a drilled hole and a felt pad on the outside. The Hotpoint guys will tell you more.
A bit heath Robinson but what do you expect…..
The pump was actually replaced beginning of the year so wouldn’t be expecting any problems there but then again it’s Hotpoint. I found one reference online to a modified cover plate yet the parts illustration I have seems to show an identical item to that already fitted, ie no hole or pad. Think I’ll wait to see if there is any reoccurrence!