I've found that just because you broke in one section nicely, it doesn't mean that another section will fit the exact way. I got everything together in 500 mode and can't get it right in 650, yet so I'll have to work those as well. I just hope I don't remove do much material to get both sections working that they get wobbly.
So far, a soak in some chilled water and a sharp rap against the table (in a cloth so as not to mar the finish) has gotten a little movement back each time. Rinse and repeat until you can work the part out...
Mine needs some more 'working'. Not feeling well, so I took a break. Maybe, later today.