Hello I am about to buy a Buell bike. I have noticed that the bike I want to acquire leaks oil form rear cylinder cover and from the place that I present on the picture, is it push rod cover? What can be the reason for such leaks? Does it mean that the owner did not take care of it? How hard it will be to fix by by myself? And how hard is it today to buy the seals for this machines since Harley no longer supports them. Thank you for help! Best regards!