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Old 05-09-2016, 03:39 PM   #11
TGR
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Several manufacturers, including Reese, have custom brackets to mount their rails to the F350 that don’t require any drilling in the frame. They use existing holes and simply bolt on. As DaveSchwartz said, they must not have used the custom brackets designed for your truck or simply installed them wrong.

The front rail’s mounting slots are ~57” forward from the rear of my truck’s bed, which leaves the pin an inch or two forward of the truck’s axel. As you surmised, your rails aren’t properly mounted.

My truck is a single rear wheel F350 long bed with Air Lift air bags. It was a little tricky mounting the rail brackets with the already air bags installed. Your air bags may present a problem with mounting the rail brackets. You might need to contact your air bag manufacturer to ensure compatibility.

Since the hitch given was a Reese, the rails are most likely Reese rails but not necessarily. As biznsa recommended, contact Reese, a local hitch installer or perhaps etrailer for advice.

It may be best to install custom brackets from a new rail kit and avoid further drilling in the frame as well as the delays trying to make do with the existing kit can cause.
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Old 05-09-2016, 04:26 PM   #12
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Quote:
Originally Posted by jb4xx View Post
It is a long bed. I looked at Google results lead me to etrailer web site. From what I read, the pin should be 2 to 4 inches in front of the axle which means my rails are about 8-10 inches behind where they should be.
jb you are correct the pin should 4 in. in front of center of axle.
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Old 05-09-2016, 07:40 PM   #13
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get the correct brackets to mount rails to frame and there is no way you will put it in wrong location.
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Old 05-09-2016, 10:46 PM   #14
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I have installed all my own 5th wheel hitches, one chev and two dodges and all directions told me " on center(the rear axle) or three " in front. As of time of writing I have had no problems with this configuration.
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Old 05-10-2016, 05:14 AM   #15
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On the Fords the universal rail mount hitches end up being 2 inches in front of the axle centerline. The rail bolts will capture the cross member underneath. If it's an inch to far back or to far forward the bolts will end up in the cross member making it impossible to get a nut on it.
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Old 05-10-2016, 06:37 AM   #16
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Quote:
Originally Posted by davel1971 View Post
get the correct brackets to mount rails to frame and there is no way you will put it in wrong location.
Great idea probably were not available when the original owner installed the rails. Wish they had them when my rails were installed. Try here this is not for your truck you will need to look for that, but here is some good info...........

http://www.hitchpro.net/application/...ons/n50054.pdf

Good Luck

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