My friend had his 700R4 trans performance built from a reputable performance trans shop when he picked it up they said to only add about a pint of trans fluid to the converter and install well he did and ran his new engine for break in for about 20 minites or so (with the trans being about 7 quarts of trans fluid low), did he damage the trans, seems to work fine with the exception of it lunges every once in a while while at cruising speed ??? thanks for any comments