Rifle Scopes USO ST-10 TPAL issue

[hondo1312]

I have an ST-10 TPAL less than 1 year old and the parallax knob won't turn through its full range of motion. I have sent an email to USO asking for help, but thought the collective intelligence of the Hide could offer up some troubleshooting tips in the meantime.

Thanks in advance!

 

[Dave@USO]

Just send that back to us and we will take a look...

 

[hondo1312]

Got a reply from Becky about checking the torque on the front rings...I remounted the scope and the parallax knob moves freely. If it occurs again I will send it in.

Thanks!

 

[DirtyDave]

Got a reply from Becky about checking the torque on the front rings...I remounted the scope and the parallax knob moves freely. If it occurs again I will send it in.

Thanks!

That will do it. If you over tighten the front ring, it distorts the tube enough to bind the internals.

 

[hondo1312]

They were torqued to 18 in-lbs with a Borka; I re-installed at 15 in-lbs. I also turned the top half of the front badger ring around 180 degrees; it seemed to fit a little better. Hopefully this takes care of it.