so , more details ..
first , abandoned plastic tube and made it by myself..
trying to keep tighter is possible...
this is on pick up side:
hole where cups pickin up potatoes is too big so trying to make some cover:
but that didn't work as expected so went to rubber solution and cut out wife's car carpet
so , when I trying to drive everything out from , forgot on step and destroyed pick up tube:
and hammer worked overtime...
also add handle :
and new tube on exit side: