I've been using THIS solder for awhile. Works great. The ONLY issue I'm having is when doing QS8's the rosin/flux seems to run into the groove where the cap snaps into, making it damn near impossible to snap it on. I work fairly fast and am not new to soldering. Connections are solid. Can't pull them apart no matter how hard I try and nice and shiny. Should I be looking for a different solder for this application? Soldering at 745 degrees, BTW.