Re: Picks of first cylinder
Bird described taking his top link cylinder to a hydraulic shop to have it shortened, fearing doing it himself for exactly the reason you mentioned (heat damage to the seals). He then watched then fully extend the rod, cut the end to shortend it, then reweld with no other handling other than extending the rod. His conclusion what "I coudl have done that myself". (Did I get it right, Bird?)
I just jumped straight to that conslusion. It's the benefit of others going before you. When you think about it, when fully extended both seals are in the center of the rod/cyl assembly and the welding is at either extreem end. After welding I could hand hold the cylinder in the middle where the seals are. Don't try this with gas welding where you really heat up the whole part, just Arc welding where the heating is more concentrated and localized.