Yes, it can be a PITA when you have the bore full of fluid then knock the plug out of the chamber with the rod. More than once I have not had it firmly seated. I use the system about every fourth cleaning and especially when season is over. Again, if you shoot anything with lead (revolvers, pistols, etc.), you owe it to yourself and your elbow to give it a try. It appears expensive and replacement fluid seems high but it really goes further than I expected.