My 617 leaked. Then I bought a gasket set (Elring I think), took it down to the long block and sealed everything. It hasn't leaked since.

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85SD 240K & stopped counting painted, putting bac together. 84SD 180,000. sold to a neighbor and member here but I forget his handle. The 84 is much improved from when I had it. 85TD beginning to repair to DD status. Lots of stuff to do.