Yes, any atty will get to that point eventually. There are many methods people use to clean them. I just blow mine out really good to get all the excess I can out of it then do a soak overnight in 91% isopropyl alcohol then blow it out and let it dry.
That generally loosens it up a lot but if it's really built up you may need to repeat the process. After that it's good to do a dry burn as well because no amount of soaking is going to get baked on build up completely off the coil.