I recently bought a 1970s/80s Nishiki International. Today I cleaned the crap out of it getting the rust off and what not with wd40 and a soft steel wool. In the process of cleaning the wheels I'm pretty sure I stripped the rear axle of my hub so that the nut will not go back on. It is an old 10 speed bike, 5 cogs in back, with a shimano 333 hub. Any ideas how I can replace the axle, when I go to my lbs will they have a replacement for me or am I going to have to buy a new hub or maybe just a new wheel.. The wheels are 27", with tires that are 27 x 1.25. Any help is appreciated if I left something out let me know, I'm not to bike savvy so what ever you say I'm most likely going to have to look up. Thanks for your time.