bump to give a shout out to schmitt for customer service on somebody else's product. i ordered a replacement stainless cap for my 1994 223 attwood wheel. it arrived and was too big. turns out by miscommunication i thought they were shipping me a 2.5" / 2 1/8" id od cap when it was a 2.5" id cap. in any event, they sent out a replacement 2 1/8" id cap today without charge.
i am going to order an ongaro horn to say thanks (and also so i have a stainless horn that works) ...
if anyone needs a 2.5" id stainless steering wheel cap it is yours for the price of shipping.