So I have ran my 11.1 lipos about 3 times now.. first couple of times I ran back to back within a 2 day stretch so no storage charning or anything. So after the last time I did a storage charge and got each cell to exactly 3.85 volts. sat for maybe 2 weeks on the bookcase in my house. charged them up to go run and when i put it back on the charger after wards to balance charge it the cells started out ad 3.92, 4.02, 4.00. as its charging it still charges balanced but going up .01 on each cell at a time. so the cells aren't charging at the same voltage. is this a problem?