Quote Originally Posted by charub View Post
Thanks for the in depth answer, but I forgot to say that it's already synthetic.
I thought I had fixed the porous breach, but now not sure. I have reassembled and tried it - the results are the same, about 8ftlb.
Tbh, I'm not sure it even had a leaky breach. My plan with this project was not to throw money at it, just do all I can without spending a penny!
I think I'm going to get the new seals and see what happens.
It might need the transfer port sleeving down.

Jim wrote about this in one of his recent, excellent articles. And T20 and Jon Budd will be able to give you the scientific reasonings if they jump in.

New seals are always a good idea.