I'm not sure which 5th gen you have. I purchased the 5th gen replicator when it first came out ..long story short I returned it due to clog after clog after clog. Apparently they fixed some things so I just bought the z18 and its awesome. 50-60 even 70 hours prints w/o a single issue...HOWEVER the second I updated the firmware I had issue after issue. I downgraded back to 1.6.1 and no issues. Also you can print out a clip to hold your extruder on...this way it won't fall off again. Like I said I am not sure which 5th gen you have but if it's a Z18 this should work.