Hello.
The company I work for has a Rep. 2 (Firmware Version 7.4) which has done 1001 hours printing.
The prints have become gradually worse, as expected from a machine which has had almost zero care.
I've been tasked with fixing whats necessary or replacing whats required.

Please see attached images.IMG_6434.jpgIMG_6435.jpg

The most recent two prints are shown in the foreground of the second image (20mm cube and test print)
I have gradually worked the Feedstockmultiplier rate down (from 0.93, in 0.05 increments, finally to 0.73) as described in the document below. This was in an effort to solve the underfeeding and gaps.

http://download.makerbot.com/replica...aintenance.pdf

As you can see it will print a 20mm block OK-ish but ask anything more complicated and the result is poor.

Any help greatly appreciated.