Hello, I have a replicator 2 with rafting issues, when I print the first raft base layer, it overlaps causing a blob on itself in several areas.
The layer is not lifting off the platform or anything weird, it just generally goes over itself when rafting causing blobs or bumbs in a few areas. (im thinking its the way makerbot desktop maps out the first layer?)
Which then causes the print head to bounce and bang against after the second layer starts.
Any ideas?

I've also had trouble with the print head grinding or rubbing / making a scraping sound on precious layers, I've leveled my platform and adjusted my filament feed rate several ways and times.
Not sure what to do, Any help will be greatly appreciated!

When I first had the machine this never happened, only after a few updates to makerbot desktop and firmware did this become a problem.
Is there a way to go back to factory firmware?