Balancing a LRP 5300 40c lipo

[B&H Racing]

Just got myself an LRP 5300 40c stick pack lipo

Its the 1st time I tried to charge it tonight on my E Station Bantam BC6 charger.

I`ve got the Trakpower charging / balancing lead because I was using Trakpower 4900.

Trying to use this lead for the new lipo the very small balancing does not it in properly at all, I can just get 1mm in.

1. Would this still balance properly using it like this ?
2. Is there a way round this ?

Many Thanks Brett