–Succeeded in getting insert and bezel off of a Squale 42mm GMT. Replaced the ceramic insert with an aluminum Batman insert. Works fine, but not exactly a knockout watch, especially given how many Squales I’ve destroyed chasing this dream.
–Went back to large group on Maximatic. Portafilter insertion is fussy with small group, but worse is that the small group somehow causes these really long slooshes from the exhaust valve.