I just finished installing my new to me island sap antiqua and started filling it today... big surprise it started to leak right as it gets to the seat edge. I drained it a started over this time stopping at every water inlet or outlet it didn't start to leak until it got above the returns and its either the not even the half way mark on the first row of seat jets or there is a little hole right above the inlets on the bottom wall right before the water goes into the seating area. That's where I think its coming from if I had to guess. I will try to figure out how to post a picture...if someone can tell me how to post the picture I will. I did find a service slip that said the board was replaced but the small o-ring for the wmv for waterfall needs to be replaced too but wasn't. I cant find what that is?? Thank you all very much.