Hi guys, I am looking for a service manual / guide for the 35mm Summilux Pre-ASPH to clean my recently procured lens. One of the screws which limit the focusing tab fell out and there seems to be a loose shim inside which is probably attached to the screw, and I'm unable to put it back in. On a side note I can now focus to +- - 0.7m with the pre-ASPH, weird. Do drop me a PM if you have any tips on putting the screw back in. I usually repair watches as a side job so I have most of the tools ready as well. Thanks!