I have an old black Nikkormat FT2 that I really love. The speeds are fine, but above 1/125 they're at least a stop off. 1/1000 tops out at 1/400. I always shoot Tri-X w/ a yellow filter, which sorta helps, but I would like to get the higher speeds up so I could shoot w/ my one Leica lens at wider apertures. Is this something I might be able to do myself, or is it complicated? I'm somewhat handy, but have no experience on these cameras, other than getting into the lens mounts to fix the jumpy meters?