Hallo Firma Thomann, 
I received the strings I ordered, installed them on my guitar, when adjusting them, the lower E-string, got immediately broken... the INNER string broke, right after installment... somewhat disappointed, I have been waiting too long to react... the guitar is standing in a mount, un-used since that time. FYI: I did not wind the string too tight! The inner string broke inside the winding... what should I do? 
Please your reaction. 
Best regards, Ron Reijnders