Ciener .22 converion 'tweaking'

[funkfool]

Ok - I searched and didn't find anything specifically relating to my trouble - so here goes:
I recently received my long awaited Ciener .22 kit for my AR...
and it doesn't work.
It fits in the gun - but when you close it back up (put in the pin) it binds and it will not charge (the bolt only pulls back about 1/2 way and stops)
Looks like it is not machined on the contact point where it meets the hammer?
I'll try to get a picture up...
Anyone else encounterd this problem before?
I wonder if I should just send it back to Midway and if I do - what if I get another just like it?
I have an opportunity to learn something here, I believe...