X2...EXACTLEY HAMMER ON ALL POINTS YOU MADE. RON SEEMS TO EXPLAIN HIS SIDE WELL & SEEMS TO INTEND TO TAKE CARE OF THE PROBLEM....LET IT PLAY OUT , IF ITS RESOLVED PROPERLY IT WILL SHOW THE KIND OF SELLER HE IS....LOCKING THREADS CREATES DOUBT & LOOKS LIKE SOMEONE IS BEING PROTECTED....IM SURE THE SELLER WOULD NOT WANT THAT TO BE THE CASE...JMO