I have a Hayward S244T sand filter with max flow rate of 62 GPM. I'd like to increase this rate to accommodate a new 100 GPM pump. My plumbing is 2" except for the multi-valve, which is 1-1/2". Can I increase the flow rate of my filter by changing to a 2" multi-valve, and if so, how to determine the new flow rate AND would I have to change the laterals as well?