I thought i was losing my mind installing new oli lines on my 51. I just got it back from my Dad he has had it for 8 years and barely drove it. So I drained gas and oil and i had some new oil lines i bought last year and installed them. The fittings leak at the head going in to the block. I just called to reorder new ones thinking I did something wrong and I was told it will be at least 6 weeks as the manufacturer is retooling the heads on all of its oil lines due to excessive leacking. Any body know where I can purchase new lines. Anyone else have this issue?? Paul