No doubt the linkage is probably well worn and will affect operation.
Here is the adjustment procedure.
What is your serial number.
Later 2 u used oil clutch.
With a dry clutch use some CRC or similar on all the linkages this makes a big difference
On my 1H with a dry clutch I found the cams were flat. I was able to source new ones from Florin. I also found the boss on the pressure plate where the cams work was cupped. I ground it flat as best as I could and it snaps in good now.