Awesome customer service from zenith. Found my bolt gap to be out of spec and got an rma immediately. Shipped my zf-5 out 11/11 got it back today 12/9. Bolt gap increased from .15mm to .4mm. Now it's time to hit the range!

(1st pic)Bolt gap found to be .15mm min spec is .25mm. (2nd pic) bolt gap fixed to .4mm just under max spec of .45mm