Posted for mikeeasley <mikeeasley@aol.com>:

 Temperature makes a big difference on how the epoxy flows.  I've had two
problems with my Sticky Stuff Dispenser in the last few years, one was the
pivot nut loosened and allowed the pivot point of the arm to move a little bit
which threw off the ratio.  I replaced the nut with a Nyloc nut.  I also
replaced the valve on the hardener side with a stainless steel one from A/S
that keeps the hardener from discoloring.  My pump is only stiff when the
epoxy is cold.
 
 Mike Easley
 Colorado Springs
 

 ---- Will Holden <w.holden@insightbb.com> wrote:
> I have a Michael Engineering Sticky Stuff Dispenser.  I bought it used in
>pretty good shape.  I cleaned it up and all, but I am having trouble with it.
> When I pull the plunger down, it goes, but it does not go up easily.  Do I
>need to unscrew the pump parts where the cylinders are and soak those in
>acetone or denatured alcohol?  I bought new reservoirs, but what is included
>in the rebuild kits Aircraft Spruce sells?  Has anyone ever send one back to
>Michael to get it reman-ed or should I just buy a new one?  Thanks!
>
> Will