MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
I had already widened and depended that notch from the original design. Using the original creator's link for the fan, I order from that and it was still a tight fit. Will widen and deepen it some more.
What sort of prices are these shops charging you?
When I put mine together, I placed the Piezo mount down between the posts and slide it back so I could slide the hot end up into position. I then slide the Piezo mount around the hot end and attached the locking part. I then placed the Nimble mount threading one of the outer screw most of the way. Then installed the two screws to hold the Piezo. Added the second pillar screw and then tightened.
If the layers separated on the ABS version, it sounds like they may have had the hot end temp too low.