and I considered what you said. Even more so today. In the end though,, I felt the Lasdrop was the best choice. I still do. So, do you do the research and then purchase one you don't want because you're afraid?
The head mechanic knew about the alignment tool and even told his second to use it. When I told him about the problem he got mad when the second said he didn't use it. He told him he really screwed up. I like the head mechanic. He spent quite a bit of time researching the Lasdrop seal and knew the correct way to install it. He trusted his second and was let down. I think the second will be on notice for not following instructions from his boss.
In this case it was a dumb screw up that will cost me time and money.