Wavery -
That is a good idea, but before embarking on it, take a look at this thread.
https://www.trailmanorowners.com/for...ht=accumulator
Note that this thread wobbles between fixing the pulsing and fixing the noise made by the pump when it is running. But apparently an accumulator that is small enough to fit under the sink is too small to do much good against the pulsing.
Bill