I have a 1969 800a with an axle problem. According to my line set ticket my rear axle is a Dana 44 ra23 tapered axle. I was cleaning and redoing the brakes recently and I took off the brake backing plate on my passenger side and noticed the axle shaft was pretty loose. I just pulled the axle out (by hand) and saw what looked like a rusted out shim around the bearing sleeve. I am very new to this and am learning as I go. I am assuming this is not factory and was just a shade tree fix to a problem. The shim looks like a hacksaw blade cut to size and inserted (see pics). When I put the axle back in without the shim it has a fair amount of wiggle. What is the best fix for this situation? This will not be a daily driver but I would like to take road trips in this eventually.