the offset bolt thing is h=just a 70 or later design change.
GUITARJONES
Heres the real deal..
Diagnosis of engine noises through the internet is not the way.
I was a tech for yrs and still build and tune.
I ain't no magazine enthusiast, armchair racer, hotrod santa clause, google tech, expert, 'guuuuuruuuuu' or the rest of whatever some retired 'netwit' says 'you people' are.
tell us sherlock...
was there oil leaking out the front seal??
did he say there was?
how bout if it sat for 20+years in the weather?
gee..that seal would be pretty hard after all that time huh?
so much for noise
if he burnt it, it would leak at every stop.
who said to pull it & tear it apart?