Cigar and pipe smoker here. I've been using Thunderbird inserts (2) in my Zippos, and I use them almost every day. Mine still work fine after a couple years of use.
The main thing about refillable butane lighters is the quality of the butane you use. Most butane brands have a lot of impurities and this creates a lot of soot, which will clog and mess-up your lighter's function over time. This is the reason why "torch" style lighters always seem to develop problems after about 6-12 months of use. I wouldn't use Ronson, Zippo and other butane refills you typically find in drug stores.
To maintain lighter "health", look for the Vector brand of butane, which has been filtered 5-times. Even the Dunhill refill is only filtered 3-times but costs 3x as much.
If you find your lighter not working correctly, try to clean the head with an old toothbrush dipped in alcohol to get rid of the built-up soot.
If you still have problems, the seals are probably going, if that is the case, you're SOL and need to get a replacement.