I am considering purchasing an Abetta Endurance saddle but am a little confused/concerned about the "3/4 Centerfire rigging" as I am very unfamiliar with this style rigging. Anyone have any input on centerfire rigging? I read some positive things and some negative things (saddle does not stay in place). I also read that one has to make sure to have a wide (6-8") cinch with this form of rigging??