I did tell you to take it out at first but trying to un screw bolt with cyl rod right beside it is a pain. carriage should lift right out. some rollers will have shims behind them. Top two rollers will have an allen bolt holding them in. takes a 6mm allen wrench to lossen. I prefer an allen wrench socket to loosen. that way way u can tap the socket while trying to loosen.Their not put on tight, I believe the design of the bolt creates a tighting. Putting them back in I use a little lock tight on say 1 thread, change all 6 rollers, even if they look good.Rollers usually break because operators are banging the carriage, hitting things to move them