just before last years riding season could start i found a small puddle of coolant under the water pump side of my Max's engine (Gen 1, '85). i tracked it down to the water pump elbow. i took it out, replaced the "O" rings, and used a little permatex on the installation.......it still leaked! pulled it out, reexamined the elbow and found that it had a crack in the "o" ring groove on 1 side. so i ordered a new one, but with supply chain and delivery issues it was taking forever, and i didnt want to lose out on the riding season. so i took a look around the garage and found that a piece of 3/4" copper pipe fits perfectly into the elbow. i took 2 short lengths, used permatex on the pipes, slipped them into the elbow, cut them flush with the ends and let the RTV set. the end result: a non leaking elbow with a more durable inside material. oh, i received the new piece in the mail about a week after i repaired the broken one.......the new piece will be my spare (its still on the shelf). pics attached