There are all sorts of 125 parts today on Ebay...type Penton in the search box...Wish I could use some of them but I have a 1977 400...Isn't that how it always is? I still need a good pipe...and seat cover...
In the mean time..take it out and get it dirty........
Steve,
I just ordered a seat cover for Al Buehnen
He may carry one for a 77. mine is a 73 125.
i think the 77 have a thicker seat,
John