Shaun,
Did you prime the tube first (initial squeeze out without nozzle installed until both sides even?). We use quite a bit of the 9462 in-house as well and have only had a few bad tubes over the years with the exception of one bad batch about 18 months ago (all cases sent back). At the rate we sell (and use) Hysol, our stock is indeed fresh! Should have called me if you had a problem!!
Todd