winn strainguage cartridge manual needed+rebuild?

i have an old winn strain guage cartridge an SD-10. it runs thru a transducer box from winn & plays thru a line stage of my preamp. it's old but still used - i love the sound & imaging depth. I am looking for an "owner's manual" - does anybody have one? also, re: retipping/rebuilding, peter of soundsmith is one source, does anyone have other suggestions?