Im helping my son out and trying to fix the actuator leak. It appears to be common to leak at the smooth shaft seal. Its a early version with the freeze plug style cap on the end verse the spin on the requires a special tool and homemade tool with 4 pins sticking out. I have taken it all apart and from what I see theres no groove for the seal to sit into like you see on the newer version actuator. I see all kind of info about folding it with string then installing it. I dont see that here. Any thoughts are appreciated.