lipo balancing problem

[Just go Play]

I am having a weird problem with a fairly new FP 5s evo25 5000 pack. I have about 20 cycles on the pack and when charging after the last run I noticed that the charge time was twice the normal and that the cells were not balanced like usual.

I use a Hyperion EOS1210i charger and LBA10 Balancer both of which are working perfectly with my 2/3/4s packs. What appears to be happening is that the balancer is not dropping the highest voltage cells as normal but is instead just bouncing the high voltage around to the other cells.

I balance all packs during charging and have never had a problem. I'm thinking that I have had connection in the balancing leads on the pack start to come loose and are not providing a good connection perhaps? Has anyone seen this problem before or know what may be causing it or even a good way to test?