Only recently have I acquired flintlocks with touch hole liners. My other flintlocks just had touch holes - no liners. My two Pedersoli Charles Moore flintlock pistols have hooked breeches. So this makes them easier to clean. On the other hand, my Frontier rifle lacks the hooked breech but still isn't difficult to clean. I use white lithium grease on the threads of the touch hole liners so they are easier to remove. I decided to try the barrel flushing kit from TOW for the Frontier rifle. However, it's impossible to get a good seal with the o-ring if the touch hole liner is in place. The slots in the liner prevent a good seal. So the only way to get a good seal with the barrel flush kit is to remove the touch hole liner. I find this difficult when the gun is fouled even with the lithium grease in place. With all this said, I am thinking about going back to my traditional way of cleaning the barrel like I did with other muzzle loaders and leave the touch hole liner in place. I would only remove it when it needs to be replaced. Sorry for the long way around to asking the question. How often does everyone here remove their touch hole liners in their flintlocks?