hello Wallace/Tyler, how did you install the check valve seats back into your pump? were you able to simply press them back in by hand, or was it necessary to use a dowel or something to tap them back in? Note that my valve seats will have new seals so I assume they'll be pretty tight going back in. Pat loaned me his tool to extract the seats and I'm wondering whether it should be used to reinstall them. thanks for the advice,, Charles