Fujica GEr aperture problem

[Krasbie]

My Fujica GEr is having some problems with the shutter-aperture after i slightly stripped the lens out for some greasing. I accidentally got some grease and wd40 on the blade but it mostly evaporated 😅.But after reassembling the shutter-aperture can't close down to anywhere smaller than about f5.6 in auto mode. It can close fully in the flash guide number mode though🤨. I even bridged the ldr sensor's contacts with my screwdriver (supposedly emulating the brightest light)and it wouldn't close either. Can I fix this with some lighter fluid or acetone or is the sensor f*cked? (the wire did get snap off at some time so I did solder in a similar wire but I think it doesn't matter, slow metering is still quite accurate.) I did put in 2 lr44s in the correct position. It would be the best of my pleasure to have some diagrams or a service manual 🥰. Thanks all

 

[BernardL]

and wd40 on the blade but it mostly evaporated

WD40 will not evaporate. Any lubricant on shutter and/or aperture blades is fatal. You need to somehow clean the blades with lighter fluid or naphta. No cleaning fluid on the optical elements, or in the focus helicoid!
Plus, even where a lubricant is needed, WD-40 is considered a No-no by the expert crowd (though I fixed a Rollei 35 10 years ago with WD-40, still going strong, but don't repeat that).