Ok, replaced front oil seal 3 times in the last. Last year put a timkin in and it leaked so removed it put a GM seal in. Lasted a year. Put a new one in GM a month ago. Worked for a week or so...Blew again and figured had to much pressure building up. Checked PCV and it was gummed up to hell. So fixed that and added a breather cap cause I got it cheap and figured it would help as well (I have an SSIC but still retains PCV but couldn't hurt). After installing another GM new one...no leaks. After a week it is leaking again. I read it needs to seat itself but any ideas how long that takes? My other one did not leak. Balancer also has a sleeve on it so no groves. Any thoughts would be helpful.