I've noticed the glow filaments tend to stick the the spooled filament. I'm using 3Dprinterstuff.com's and it has stopped my print 3 times by not being able to unspool.

Anyone have an idea for mitigating this problem?

I've tried printing in a warmer environment, cooler, and by putting it on better spooling systems with less friction.

My success has come from putting the spool on 4 skateboard bearings for ease of rotation, and by hand spooling out more filament as it tightens up.