Koetsu Urushi

I have had nothing but bad luck. I bought it low hours used, a 1986 model. Bad slide across album, lost the tip. Sent it back to Koetsu. Complete rebuild $2500. Again don't know how this time, stylus tip gone. Sent it back again just replacing the stylus shaft. Recently I have felt the sound quality wasn't as good. Upon inspection the shaft is slightly off center? First question do you think this "slight" off center will affect sound. Second question, any recommendations for another cart of same or better quality? I am sick of all of these expensive problems with Koetsu