I keep my pack in the Deans Battery jig, then spread the shoe goo between the cells. Let dry for a bit then take out of the jig (after soldering the bars on). Not sure if this is the best way but it worked for me.
Paris Junction Hobbies ~ RROL.ca ~ Lou's Speedway ~ SCAR
XRAY X10 Link ~ CVTA Sakura Zero S ~ XRAY X10 Custom Oval ~ Caster Fusion F18