Something I learned was that you will probably have to make tools, unless you have a really good optical wrench. Fortunately tricks like filing down pliers to m

Something I learned was that you will probably have to make tools, unless you have a really good optical wrench. Fortunately tricks like filing down pliers to make very small tips and filing in-between cheap screwdriver flats work really well. Years of SMT work finally paid off as some cameras require desoldering certain parts to get into the depths. The biggest risk is scratches where the OEM tooling otherwise fits perfectly, but I'm not that prissy over a 50 year old SLR. The repair guides from the manufacturers are pretty opaque and serve only to show where things go. Often they list tons of bespoke equipment and calibration tools that you won't have.