I'm discovering that some of the grease lines are clogged on my brother. The lines are inaccessible without pulling off the entire machine table. Is applying grease manually to either side of ball nuts and guide blocks adequate? Or will I be getting improper lubrication as it's not being applied directly into the ball nuts/guides? I'd rather pull back the way covers once a week than disassemble the entire machine to replace the lines. Thoughts?