I inherited a dual 421/455D system a few years go when I purchased a home. I cannot seem to fine tune the closing points and there is no
way to install a positive stop in the middle of the driveway. The right operator does not seem to close completely, but the key release does no good
as the travel between locking point is too large. Im wondering if I can manually rotate the screw jack to fine tune....only need about any extra inch on closing. Cant find anything in the manual that addresses this issue. Thanks
way to install a positive stop in the middle of the driveway. The right operator does not seem to close completely, but the key release does no good
as the travel between locking point is too large. Im wondering if I can manually rotate the screw jack to fine tune....only need about any extra inch on closing. Cant find anything in the manual that addresses this issue. Thanks
