Am going to shim slightly this evening, having replaced the old burr set. Got a petty good crema/taste out this morning, but on finest setting, so no leeway.
I have emailed online supplier of new burr set, asking what the situation is with their being able to send back to Sunbeam with a note about my problem. Will probably have an answer tonight. Would appreciate any feedback on replacing burr set in an EM0480, even boringly uneventful ones. ::)