I have a rebuilt TB from VC from Whip13, it works great but it does need some lube from time to time. I put a lot of miles on my truck, I can tell when it's getting bad as the idles remains high. 
      I think even the sealed bearings in that heat need. Little attention.

Sent from my iPhone

> On Oct 5, 2017, at 10:53 AM, Stuart MacMillan <stuartmacm@GMAIL.COM> wrote:
> 
> Figure out if it's the TB sticking or the accelerator cable. Disconnect the cable and test the TB opening and closing smoothly.  These cables have a bellows that fails and gunk can get into the tube. http://www.gowesty.com/product-details.php?v=&id=3524  
> 
> Check your pedal too.
> 
> Stuart
> 
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of Andrew R.
> Sent: Thursday, October 05, 2017 8:54 AM
> To: vanagon@GERRY.VANAGON.COM
> Subject: "sticky" new Gowesty throttle body
> 
> Hi all,
> 
> Have a couple hundred miles on the this unit now.  Initial feedback was
> great until this morning.
> 
> http://www.gowesty.com/product-details.php?id=24718
> 
> I experienced slow or no return on the TB upon letting off the gas on the
> freeway. Go to shift from 3rd to 4th and the RPMs remained steady in the
> 3-3.5k range through the shift. If I left the van in gear and slowed down
> via braking to 2K RPM or thereabouts, the idle would return to normal upon
> depressing the clutch. Let off the accelerator while cruising at 3k RPM and
> I could tell the van was not decelerating as it should be. Depress the
> clutch pedal and RPMs did not drop to idle levels. TB was not closing.
> 
> Thoughts? I'm wondering if the original tension spring isn't up to the task
> and needs to be bent/shortened some to increase return force on the TB.
> Never had this issue before the new TB.
> 
> 87 GL w/ Rocky Jennings 2.2L motor.
> 
> thanks,
> Andrew