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Will this flashforge dual hot end work as a replacement on my rep 2x?
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Makerbot's reply was that I needed to remove Sailfish and go back to MBI firmware, because Sailfish isn't supported in the 2X.

This all started sometime after installing aluminum Z arm upgrades. This was the 2nd of 2 printers I installed on, no issues on printer 1. I wonder if it's related. I'll try removing the threaded rod...

No. Its just slowly lowers itself free of any motor control. Silently drops. Works fine when I start a print. It's just after going to home axis or after bed leveling

I don't know that this is really a problem but a strange behavior for sure. If I tell my 2X to go to home axis, it does, but then the build plate just basically free falls away.

Glad to find this...