I think the '35 is similar to my '46. There is a set screw in the back edge of the door, adjacent to the lock cylinder. Loosening it will allow the cylinder to be removed. I soaked the set screw with penetrant ahead of trying to remove it. You don't want to damage the screw trying to get it loose; and anti seize compound is a good idea when re-installing it. If the window is in place, installing the lock cylinder can be made much easier by using something to hold the operating tang straight so that it will slip back into the slot in the mechanism. I used a small blob of duct seal molded around the back of the cylinder and the tang to keep it straight. The lock lang will turn in the duct seal once the key is used and leaving the duct seal in place won't hurt anything, it will shield the lock from any water that might get to it from the window. Hope this is some use to you. Good luck!