I have an old unit (2011) that just started leaking on the port seal. It seems like I cant find much on the pro unit. Just around 200 hours on it, but age got it and its dripping pretty good while boat is parked in garage. Does anyone know if the HS5157 seal kit will work or is it a different number? Just wondering if I should spend on the seals or pony up and just but a new cylinder? The little side brackets that connect to the pivot bolt have just a little slop and seastar says these are unserviceable, Im guessing due to liability.