I sheared off about 4 axles in my tan Jeep before going Superior 1 piece. My green Jeep has the original 2 piece axles in it and I haven't had a problem from them. When I shear one, I'll go one piece, but I'm not going to replace my 2 piece axles till one fails.
I'm only running 31's, but had a buddy running 35's on 2 piece axles. I told him one would break, but it never did. Go figure.
I don't have a steam cleaner. I just wire brush everything, prep and etch, and then paint.
85 CJ7 258, borla header, Team Rush, MC2100 ,optima batt, Warn 8274, agr super box 2 & pump, T5 w/ B&M shifter, centerforce 2, superior 1 piece axles, warn hubs 2.5 in lift, 31" BFG MT
85 CJ7 258, A/C, T176, MC2100, Team Rush, Warn XD8000i, superwinch hubs, 3in lift 31" BFG AT/KO