While you're at it go ahead and clean that poor bike by hand with soapy water and old rags -- looking it over carefully while and after cleaning it you might find more "deferred" maintenance issues that should be addressed -- like the empty bottle boss holes pointed out earlier. You've proven that you CAN ride a bike which badly needs mechanical attention 70 miles (congratulations?), but your rides will be a lot better if the bike is in good mechanical condition, and the bike will last longer, too.