I would have to second dazzler on the selling of bulged lipo's to someone else.
they are really only fit for disposing of.
If you are able to balance charge, now you have the option i would definately do this. But discharge the pack on the new charger first before balance charging, this may make the new charger take longer to recharge the pack but they will be properly balanced at the end of the charge cycle.
The 'bulk' of the charging should take the packs up to about 95 % of their full capacity and the final 5% should take much longer to top off and balance the pack. Most up to date chargers will have a 'dual' type display for each cell so you can see whats happening i.e both voltages of each lipo in the pack should be displayed.
Sounds like your old charger was a much more charger for Nimh with a Lipo charge function added on. This was around when lipo's were in their infancy with RC, nothing wrong with it but just not bang up to date. Only thing I found with the Much More chargers is that they were VERY sensitive to fluctuations in input voltage and or something else taking current from the power supply.