can i use an ICL7660CPA (mouser link: http://www.mouser.com/Search/ProductDetail.aspx?R=ICL7660CPA%2bvirtualkey99990000virtualkey700-ICL7660CPA) in the charge pump section of the sunking? i could not find the specified ICL7660SPCA at mouser. i wanted to try to avoid the MAX1044 as i haven't had the best luck with that chip in a couple of other pedals. thanks so much for your time.