My Cordes Lamberts arrived today, so I immediately tried to string up my Eminence with them and found that they are too big for the tuning machines 😕
What I did do was swap the Helicore Hybrids on my acoustic with the mystery synthetics on the Eminence... and it appears to have brought both to life and made both easier to play. Very peculiar! Will keep an eye on this space obviously, but just might do the job for now...