When I build my shapeoko 3 I noticed something odd. As you can see in these picture the idler barring that the belt goes through are what is supporting the weight and not the plastic idler parts.
are you sure everything is mounted in the correct place?
@Dieter_Schneider
dono I would think so I did not have any extra parts
Seems like tour wheels are not set right
@SonicStrikeFPV some holes are pretty close to eachother and I did some minor mistakes when mounting. Double check the instructions and placements.
Mine actually have the same appearance. I believe it is designed correctly, as both flanged and unflanged bearings have been shipped at various times so there is no intent for the bearings to contribute to the support of the carriage. The flanged version of the bearings do assist in keeping the belt in position, so they are the better choice. In my case, I can easily slide a standard sheet of copy paper under the bearings with no drag whatsoever. If the Delrin v-wheels are moving as the gantry is jogged/moved around, then those are providing the mechanical support and linear motion. The bearings WILL move as well, but that is due to friction from the tension on the belt.
Test the above observations and let us know if you see the same results.
Mine isn’t like that
Would love to see pictures of assemblies that do NOT have those idler bearings very close to (not ON) the linear rail. Perhaps you have the non-flanged versions of the bearings if you see something different?
In any case, I would love to have the OP do the paper test under his bearings and verify that it moves cleanly and smoothly under the idler bearings without catching. The OP’s picture looks exactly like mine and there is ZERO rubbing of the bearings along the rail. The v-wheels are supporting the complete wait of the plate/carriage/gantry.
The fit on those flanged bearings is really close on all machines. When I built the first model I thought they were rubbing too, despite CAD telling me there was clearance.
In the end, there is indeed clearance. Not much, but it’s there. Roughly .05mm (.0019").
A piece of paper may be too thick to test, you’ll have to find something thinner 
@Edward_Ford
so what do u recommend doing?
Each of those holes is oversized by approximately 0.5mm. You could loosen the nuts and when you re-tighten the screws, try pressing them towards the ‘top’ of the hole. Assuming they are now are the bottom, that could give you .5mm more clearance.
Otherwise, send an email into support@carbide3d.com if you’re worried about it effecting the way your machine operates. At first glance, i dont think it’s much to worry about if all 4 of your v-wheels are engadges with the rail.
Ah - I just re-read your OP. If the weight of the carriage is indeed resting on the idlers, and not on the v-wheels, then be sure to send us an email and we’ll get it sorted out.
@Edward_Ford
Ok will do I looked yesterday and 3 of the v wheels are in contact but one is not I will try loosing the nuts today