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Mike L Was really surprised how simple these were to install. There's four ways you can install them and you can search on the web to find the one that suits you. I went with the traditional screw in. Keep in mind that some methods will require clipping the feet and there's no going back once you do.
I like that the wire can insert into the housing front or back it doesn't matter. The tolerances where the wire inserts are pretty tight and had no ticking using them unlubed. You could use them unlubed, but in the end I chose just to do a light coating of Krytox 205g0 on the wire. They sound great and required no tuning at all. Highly recommend.