Turn signals cancels too early

[rpmerf]

70 C20. Non tilt, not telescoping column. The turn signals seem to be working as intended, but they cancel too early for my taste. I have a road near me, where the road turns left, and I need to make a right turn. With the right turn signal on, the wheel only needs to turn about 1/8 turn to the left to click off the turn signal. I have to manually hold it while it is constantly trying to click off. I would like it to click off at closer to 1/4 to 1/2 turn.

Has anyone tried a replacement cam, or modifying the existing cam? The cam in my truck has 4 nubs on it. Looking at it installed, they are at about 2:00, 4:00, 7:30, and 10:30. The one that is really bugging me, is the nub at 2:00. I've been poking around online and see a bunch of these cams only have nubs at like 8:00 and 10:00. I'd really rather not modify my current cam, and I know that if I get a replacement, it will need to fit into the bearing like the current one does.

Thank you