Getting ready for summer, I replaced a bad pump motor and at the same time I did the impeller, diffuser, seal and o-rings which came in one kit (R0445304 Jandy Impeller Replacement Kit) and the back plate o-ring I bought separately. Sadly, I have a small leak where the motor attaches It was my first time doing this and I was so careful I watched every video I could find and I have no idea what I did wrong. Is my next step to take it all apart and replace the seal even though it's all brand new? Does it matter that I have a salt water pool for the seal? I there a different seal that would be better??? The kit I used included a R0479400 Seal. Thanks for any help.