Those roller guides are really poor they look like the same poope blue versions Grippatank and Gardiners sell, i brought some years ago from Grippamax. Any pressure applied to the roller (only nylon and no bearings) like pulling the hose at an angle they simply get pushed against the metal and dont turn.
I drilled the holes out and made the gap between each of the rollers and the metal bigger which sorted the issues. There is nothing to grease on these. These really do only guide the hose but cant take any force against the roller, i still have 2 new ones the garage, there only fit to pull cotton thread through them