jorswift
I think you mean the "lift link", and not the lift arm, as you mentioned it is "without the easy adjustment. Welding it should work, as seldom need to adjust that side from my experience.
Here is pic of the left lift arm. and of the left lift link.
Yes, sorry for the confusion. The link #28 in diagram broke right at the first thread. Why are they $250-300 for that part? WOW, they are proud of them.