Mechanical lift issue.

[Southkraut 45]

I tried out all my toys this weekend for the first time. I have an ‘84 C125. It has mechanical lift. The plow and the tiller lift to get them high enough to go around to the garden I had to adjust the chain to lift them pretty high. When lowered it barely touched the ground. To get it to plow and till I had to lower it once I got to the garden. When I got them low enough to work lifted all the way up to do turns they were still slightly engaging the ground. Any suggestions on how to adjust this. I was going to try to look at a different lift angle for the plow but the tiller seems to be more baffling to change??? It worked ok I just figured it should lift higher than it did. Thanks for any help. Todd. 

[WVHillbilly520H 10,373]

There should be a few (3-4) notches in the rockshaft these are for the adjustments you are asking about and then multiple chain links as the clevis on the hitch as need at least on my 520H... I added extra holes in the lift point to also help with this.

[Southkraut 45]

Great I will take a look at that. Thanks for the help.