I picked up a throatless shear Monday morning and after a 20% off coupon, paid $135.67 with tax. The bolts were both very loose which wasn't an issue. I snugged them and checked the blade adjustment. The rear adjusting screw didn't even xontacf the blade, it went under the arch. I still attempted to cut some 16 gauge sheet and the blades rubbed each other and the edges were slightly damaged. So back if went today. Swapped it for another one. I'll try it again and see what happens. There are no instructions at all aboiy adjusting the blades or how snug the bolts should be. Any suggestions on the set up Bob?