I got into my slipping clutch and found very little wear on the disk at 70,000 mi. It was slipping due to oil reaching and contaminating the disk material. I have replaced the rear main and input shaft seals. The troubleshooting flow chart in the manual for oil on the clutch says to replace the thrust ring. I have no idea what that is but I also have a leak at the push rod boot at the rear of the transmission. Is there another seal here that I'm missing ? Is there a seal on the push rod ?